A case of executive hypertension Essay Example | Topics and Well Written Essays - 750 words

A case of executive hypertension - Essay Example Blood pressure illustrates arterial pressure on the systemic circulation (Samia 2010). A sphygmomanometer is the device that is applied in measuring arterial pressure. d) Systolic pressure is generated by the contraction of the left ventricle. The pressure is normally between 100 and 140 mmHg. Blood that flows to the aorta through the left ventricle increases aortic pressure to the same level as the left ventricle (Neubauer 2007). f) Heart valves prevent blood from flowing backwards. The valves involve flaps which are based at the end of the ventricles (Newburger 2009). The valves are one way blood inlets on one ventricle side, and one way outlet on the other ventricle side. The four heart valves are; tricuspid valve, aortic valve, pulmonary valve and mitral valve. g) Stenosis occurs when the blood flow from the heart is reduced through the failure of the valve to completely open. If the valves do not close completely, it results to pulmonary regurgitation that enables blood to leak back to the ventricles (Davis 2008). Regurgitation enables the right ventricle to relatively harder in comparison to the left part of the heart. h) Low systolic pressure illustrates abnormally low blood pressure in the arteries. Very low blood pressure restricts the volume of blood that flows through vital organs, and thus causes dizziness and fainting. High systolic pressure occurs if the reading is more than 140mmHg. It is caused by conditions like artery stiffness and the heart valve problems (Ross 2011). i) Denises initial reading 150/95mmHg blood pressure. The reading illustrates high pressure because it is more than 140/90mmHg (Talley 2013). The hypertension is due to the high blood pressure, and can cause stroke and heart attack. j) Denises has high blood pressure because of diet and lifestyle. Hypertension may also be due to genetics and family history (Samia 2010). Stress levels at the workplace, can also lead to

In what ways has technology ended the physical and intellectual Essay

In what ways has technology ended the physical and intellectual isolation of Americans - Essay Example Young students today have trouble grasping the idea that the human race had lived without modern communication gadgets, CD’s and computers but our current technology levels had to start somewhere, and most historians agree that the Industrial Revolution was the instigator of improved technologies in communication, agriculture, transportation and energy. Although America’s industrial revolution started slightly later than in Britain (first half of the 19th century) the impact was quickly felt as people moved from agricultural lifestyles into the cities to work in manufacturing and trade (Duiker, 2005). One of the biggest impacts of the Industrial Revolution in America was the establishment of infrastructure (Bowles, 2011). In terms of size America was a lot larger than Britain so for the other technological advances to mean anything people and goods need to be moved around. From 1830 America started building thousands of miles of roads and canals linking one side of the country to the other. Steamboats transported goods on the Great Lakes as well as coastal waters. But the crowning glory of the time was the railroad system. More than 27,000 miles of railroad tracks were laid in the thirty years from the 1830’s. ... hanks to Henry Ford Americans not only wanted a car, they could afford to buy one and this one innovation alone had a huge impact on the way American’s lived, played and worked (Ford, 1922). America’s technological advances also increased its food production. New methods of planting and harvesting crops meant that America had a surplus of food to sell and crops like corn and potatoes were being sent as far away as China. But it was in the industrial area that America really shined in the early 1900’s. Steel companies were producing massive amounts of products and as the expansion of trade increased, did the need for workers and so by 1900 40% of America’s population lived in urban areas (Bowles, 2011). The technological advances were not without their challenges however, especially when it came to aspects like the quality of life for those people who had moved into urban areas so that they could work. In 1890 for example it was found that only 9% of Americ ans shared in 71% of the wealth. There were complaints about working conditions which were almost cruel by today’s standards and racism was still an equally huge issue. Slavery might have been abolished but negative attitudes about African Americans and Native Americans were still widespread (Bartells, 2008). The Progressive Era as it was called was the government’s response to the plight that affected such a large proportion of the population – low wages, high unemployment, atrocious working conditions, plus a lack of decent housing, healthcare and education. At first the initiatives were done at a state level (Noggle, 1966). This included some state governments bringing in laws to help reduce or regulate the number of hours a person could work, regulating wages and improving work conditions especially

Walden Two by B.F. Skinner Essay Example for Free

Walden Two by B.F. Skinner Essay B. F Skinner published Walden Two in 1948. The novel takes place in the United States shortly after the end of World War II. Rodge Rogers, whose first name is not given and Steve Jamnik became friends while serving in the military during the war. After the war, they find that it is difficult to return to a normal life, Jamnik and I are like a lot of other young people right now. We cant make up our minds. We dont know what we want to do (Skinner, 1948, p. 7). In an attempt to find the life they want to lead they visit Professor Burris, one of Rodges former professors, to discuss his ideas about utopia. Ironically Burris barely remembers mentioning the subject but finally recalls a fellow student he knew in graduate school named Frazier who had designed a utopian community named Walden Two. Burris contacts Frazier and arranges the three of them, as well as Castle, a colleague of Burris, Barbara Macklin, Rogers girlfriend, and Mary Grove, Jamniks girlfriend, to visit Walden Two (Skinner, 1948, pp. 7-15). When they arrive, Frazier shows them around the community and explains how it operates. They meet some of its approximate 1,000 inhabitants. The people appear to be happy. They live in communal quarters, share meals at communal dining halls and share the facilities of the community. Each of the adults works about four hours each day to provide for the needs of the community. They are not paid a salary because money is not used within Walden Two. The people in roles of leadership carefully monitor life in the community. If there is evidence suggesting a change should be made for the communitys good, it is made and its consequences carefully evaluated (Skinner, 1948). During their three-day visit, Burris and the others experience the community lifestyle. At the end of their visit, Steve Jamnik and Mary Grove love life at Walden Two so much the decide to stay. Rodge also likes the life there and wants to stay, but his girlfriend Barbara refuses to say so they both return to society. Castle likes nothing about Walden Two and returns to his regular lifestyle as a college professor. Professor Burris finds himself intrigued with life in the commune, but decides to return to his academic life. However, once he is at the station, he changes his mind and returns to Walden Two to live and gives up his life as a professor. I found this book disturbing, even threatening. As I read through the book, I found myself thinking of Orwells 1984 and Aldous Huxleys Brave New World. I felt like this even though 1984 wasnt published until the same year as Walden Two so it couldnt have influenced Skinners writing, and Skinner explicitly denies this with a vague reference to Huxleys work, I suppose you put phonographs in your dormitories which repeat I like to work in sewers. Sewers are lots of fun, said Castle. No, Walden Two isnt that kind of brave new world, said Frazier. We dont propagandize' (Skinner, 1948, p. 53). Although Walden Two was an insolated community, there is a latent undertone of expansion and trying to convert society as a whole to the Walden Two model. Castle argues with Frazier, Ill bet you have designs on the political machinery too . . . [youll] want to get the offices yourself, . . .. Yes, [Frazier responds] I must admit youre right. . . . As soon as were in the majority in any locality, we shall exercise our rights under a democratic form of government and take control' (Skinner, 1948, p. 231). As disturbing as the thought of communities such as Walden Two taking over the government is, this isnt really what disturbs me. Throughout the three-day visit, whenever anyone challenges Frazier about a point or questions something about the life in Walden Two, he always has what feels like a dispassionate, rehearsed response. Frazier is reminiscent of a used car salesmen who can deflect any criticism of the car he is trying to sell. He always has an answer at the ready that he delivers with a confidence and authority that appear to brush away the visitors objections as if they are unfounded and insignificant. It feels as if he is running a con game and the six visitors are the marks. According to Frazier Walden Two provides an ideal, satisfying lifestyle. It appears that all of the needs of Walden Twos inhabitants are provided with everything they need, they work only four hours per day, have recreation, and appear to have a great deal more freedom than people enjoy in the United States today. Despite this assurance, I would not want to live there. What Frazier has done has removed the individual person from consideration. There is a paternalistic quality that implies the managers of Walden Two know best and the inhabitants should just agree and enjoy the life there. In effect, Frazier/Skinner has reduced people to their basic responses to both internal and external stimuli. Of course this is precisely what Skinner, as a behaviorist, wants to do. For my part I prefer to think of myself as an adult person with a free will who takes an active part in living his own life. I would rather believe this, even if it is incorrect, than to submit to Skinners philosophy even if his theories were correct. References Skinner, B. F. (1948). Walden Two. New York: Macmillan.

Input And Output Devices Computer Science Essay

Input And Output Devices Computer Science Essay The computer will be of no use unless it is able to communicate with the outside world. Input and Output devices are required for users to communicate with the computer. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. These input/output devices are also known as peripherals since they enclose the CPU and memory of a computer system. A hardware device that accepts inputted information and also has the capability of outputting that information. Good examples of an input and output devices are a floppy diskette drive and a hard disk drive. An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world. In computing, input and output, refers to the communication between an information processing system (such as computer), and the outside world. Inputs are the signals or data sent to the system, and output are the signals or data sent by the system to the outside. The most common input devices used by the computer are the keyboard and mouse. The keyboard allows the entry of textual information while the mouse allows the selection of a point on the screen by moving a screen cursor to the point and pressing a mouse button. The most common outputs are monitors and speakers. Output devices Examples of output devices Any peripheral that receives and/or displays output from a computer. To the right is a picture of an inkjet printer and a good example of an output device. Below is a listing of all the different types of computer output devices found on a computer. Sound card Video card Projector Monitor Speakers Printer Features and Functions Sound Card D:MMU fileSEM 3Computer Applicationsound card.jpg A sound card (also known as an audio card) is a computer expansion card that facilitate the input and output of audio signals to and from a computer under control of computer programs. Typical uses of sound cards comprise providing the audio component for multimedia applications such as music composition, editing video or audio, presentation, education, and entertainment (games). Many computers have sound capabilities built in, while others necessitate extra expansion cards to provide for audio capability. Video CardD:MMU fileSEM 3Computer ApplicationVideo_Card.jpg A video card, video adapter, graphics-accelerator card, display adapter or graphics card is an extension card whose function is to generate and output images to a display. Many video cards offer added functions, such as accelerated rendering of 3D scenes and 2D graphics, video capture, TV-tuner adapter, MPEG-2/MPEG-4 decoding, FireWire, light pen, TV output, or the ability to connect multiple monitors (multi-monitor). Other modern high performance video cards are used for more graphically demanding purposes, such as PC games. images7 Projector A video projector takes a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings. Video projectors are widely used for meeting room presentations, classroom training, home theatre and live events applications. Projectors are widely used in many schools and other educational settings, connected to an interactive white board to interactively teach pupils. Monitor images5 A monitor or display (sometimes called a visual display unit) is an electronic visual display for computers. The monitor comprises the display device, circuitry, and an enclosure. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD), at the same time as older monitors use a cathode ray tube (CRT). Speakersimages8 Computer speakers, or multimedia speakers, are speakers external to a computer that disable the lower fidelity built-in speaker. They often have a low-power internal amplifier. The standard audio connection is a 3.5mm (1/8 inch) stereo jack plugs frequently colour-coded lime green (following the PC 99 standard) for computer sound cards. A plug and socket for a two-wire (signal and ground) coaxial cable that is generally used to connect analogy audio and video components. Also called a phono connector, rows of RCA sockets are found on the backs of stereo amplifier and numerous A/V products. The prong is 1/8 thick by 5/16 long. A few use an RCA connector for input. There are also USB speakers which are powered from the 5 volts at 200 milliamps provided by the USB port, allowing about half a watt of output power. Printerimages6 In computing, a printer is a peripheral which produces a hard copy (permanent readable text and/or graphics) of documents stored in electronic form, usually on physical print media such as paper or transparencies. Many printers are first and foremost used as local peripherals, and are attached by a printer cable or, in most new printers, a USB cable to a computer which serves as a document source. Some printers, commonly known as network printers, have built-in network interfaces (typically wireless and/or Ethernet), and can serve as a hardcopy device for any user on the network. Person printers are frequently designed to support both local and network connected users at the same time. In addition, a small number of modern printers can directly interface to electronic media such as memory sticks or memory cards, or to image capture devices such as digital cameras, scanners; some printers are combined with a scanners and/or fax machines in a single unit, and can function as photocopie rs. Printers that include non-printing features are sometimes called Multifunction printers (MFP), Multi-Function Devices (MFD), or All-In-One (AIO) printers. Most MFPs include printing, scanning, and copying in the middle of their features. Advantages and Disadvantages of Output Devices No Output devices Advantages Disadvantages 1 Monitor Comparatively cheap and reliable, can display text and graphics in a wide range of colures. They are also quiet and do not squander paper. No enduring copy to keep and unsuitable for users with visual problems. 2 Printer The purchase cost is low and the running costs are very low. They can print fairly quickly, particularly if you remember that multiple copies are being printed in one print run. They are robust and can operate in harsh environments. If several sheets of self-carbonating paper are placed into the printer then the impact will produce duplicate copies. The printing quality is low these printers produce low to medium quality black and white printing and can only print low resolution graphics. Because of the impact of the pins against the paper, these printers can be quite noisy. 3 Projector Enables a lot of people to be able to see something even from a distance Image quality may not be as good when projected. 4 Speakers Cheap and generally available.   Capable of producing very high quality sound. They are an analogue device so the digital sound signal has to be converted, usually by a sound card. Input Devices A hardware device that sends information to the computer. Without any input devices a computer would simply be a display device and not allow users to interact with it, much like a TV. To the right are a Logitech trackball mouse and an example of an input device. Below is a listing of all the different types of computer input devices found on a computer. Example of Input Devices Keyboard Gamepad Digital camera Mouse (pointing device) Microphone Webcam Joystick Scanner MIDI Keyboard Features and Functions for input devices Keyboard20071004_razer_lycosa In computing, a keyboard is an input device, partially modelled after the typewriter keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys at the same time or in sequence. While most keyboard keys produce letters, numbers or signs (characters), other keys or real-time key presses can produce actions or computer commands. Gamepad D:MMU fileSEM 3Computer Application350__1_full_game_pad_001.jpg.png A gamepad (also called Joypad or control pad), is a type of game controller held in the hand, where the digits (especially thumbs) are used to offer input. Gamepads generally feature a set of action buttons handled with the right thumb and a direction controller handled with the left. The direction controller has traditionally been a four-way digital cross (also named a Joypad, or alternatively a D-pad), but most modern controllers as well (or as a substitute) feature an analog stick. Digital Camera images Most digital cameras function in much the same way as a traditional camera that uses film to record images, except that in place of the film, images are captured and preserved in the cameraà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬Ãƒ ¢Ã¢â‚¬Å¾Ã‚ ¢s digital memory, which may be built-in or which may be on a detachable memory card. Mouserazer_naga_1 In computing, a mouse (plural mice, mousses, or mouse devices.) is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the users hands, with one or more buttons. It sometimes features other elements, such as wheels, which allow the user to perform a variety of system-dependent operations, or extra buttons or features can additional control or dimensional input. The mouses motion typically translates into the motion of a cursor on a display, which allows for fine control of a Graphical User Interface. Microphone images1 A microphone (colloquially called a mic or mike) is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal .Microphones are used in many applications such as telephones, tape recorders, karaoke systems, hearing aids, motion picture production, live and recorded audio engineering, FRS radios, megaphones, in radio and television broadcasting and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic checking or knock sensors. Web Camimages4 A webcam is a video capture device connected to a computer or computer network, frequently using a USB port or, if connected to a network, Ethernet or Wi-Fi. The mainly popular use is for video telephony, permitting a computer to act as a videophone or video conferencing station. This can be used in messenger programs such as Windows Live Messenger, Skype and Yahoo messenger services. Other popular uses, which include the recording of video files or even still-images, are accessible via numerous software programs, applications and devices. Webcams are known for low manufacturing costs and flexibility, making them the lowest cost form of video telephony. The term webcam may also be used in its original sense of a video camera connected to the Web ceaselessly for an indefinite time, rather than for a particular session, generally supplying a view for anyone who visits its web page over the Internet. Some of these, for example those used as online traffic cameras, are expensive, rugged professional video cameras. Joystickimages A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks are often used to control video games, and usually have one or more push-buttons whose state can also be read by the computer. A popular variation of the joystick used on modern video game consoles is the analogy stick. The joystick has been the principal flight control in the cockpit of many aircraft, chiefly military fast jets, where centre stick or side-stick location may be employed. Joysticks are also used for controlling machines such as cranes, trucks, submerged unmanned vehicles, wheelchairs, surveillance cameras and zero turning radius lawn mowers. Miniature finger-operated joysticks have been adopted as input devices for smaller electronic equipment such as mobile phones. Scannerimages3 In computing, a scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Common examples found in offices are variations of the desktop (or flatbed) scanner where the document is placed on a glass window for scanning. Hand-held scanners, where the device is moved by hand, have evolved from text scanning wands to 3D scanners used for industrial design, overturn engineering, test and measurement, orthotics, gaming and other applications. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical. MIDI Keyboardimages2 A MIDI keyboard is a piano-style digital keyboard device used for sending MIDI signals or commands to other devices connected to the same interface as the keyboard. MIDI is an acronym for Musical Instrument Digital Interface (protocol). The basic MIDI keyboard does not produce sound. In its place, MIDI information is sent to an electronic module capable of reproducing an array of digital sounds or samples that resemble traditional analog musical instruments. These samples are also referred to as voices. Advantages and Disadvantages of Input Devices No Input Devices Advantages Disadvantages 1 Digital Camera No film is needed and there are no film developing costs Unwanted images can be deleted straight away Images are already digital and can easily be transferred to a computer and edited or transferred over the Internet Special image editing software can allow a huge range of adjustments and special effects to be tried Images often have to be compressed to shun using up too much expensive memory. 2 Joystick Easy to learn to use.   Very simple design so they can be reasonably priced. Control can be a bit crude as the directions in simple joysticks are limited to forward, backwards, left and right.   Better models offer diagonal movement or better. 3 Keyboard dependable for data input of text and numbers. Usually supplied with a computer so no additional cost. Specialized keyboards are available. Users may be slow for not very accurate typists. Slow for accessing menus etc. and difficult to use if you want to move objects around the screen. Difficult for people unable to use keyboards through paralysis or muscular disorder. 4 Microphone Voice recognition software can be used to convert your voice into text or to control menu options on a phone system. Stored audio files can take up a lot of memory. Voice commands can be difficult to recognise by the software. 5 MIDI keyboard Data from a musical instrument is easily captured and edited with a computer. MIDI files are small. MIDI files can be recorded on one type of instrument and played back on another. Audio cannot be recorded directly as an audio file such as MP3. The playback depends on the instrument/computer sound card so may not sound the same as the original. Only the note and the timing are stored. 6 Mouse Ideal for use with desktop computers. more often than not supplied with a computer so no additional cost. All computer users tend to be familiar with using them. They need a flat space close to the computer. The mouse cannot easily be used with laptop, notebook or palmtop computers. (These need a tracker ball or a touch sensitive pad called a touch pad). 7 Scanner Flat-bed scanners are very accurate and can produce images with a far higher resolution than a digital camera. Can produce very large image files which need a lot of computer memory to view and edit. Types of Pointing Devices pointing stick.jpg The is a small number of examples of pointing devices are pointing stick, touch screen, touch pad, joystick. A pointing stick is a pressure sensitive small nub used like a joystick. Its more frequently than not found on laptops embedded between the G, H, and B keys. It operates by sensing the force applied by the user. The corresponding mouse buttons are commonly placed just below the spacebar. It is also found on mice and some desktop keyboards. Touch Screen images13 A touch screen is a device embedded into the screen of the TV Monitor, or System LCD monitor screens of laptop computers. Users interrelate with the device by physically pressing items shown on the screen, either with their fingers or some helping tool. Touch screens could be used in couple with stylus pointing devices, while those powered by infrared do not require physical touch, but just differentiate the movement of hand and fingers in some minimum range distance from real screen. Touchpadimages9 A touchpad or track pad is a flat surface that can detect finger contact. Its a motionless pointing device, commonly used on laptop computers. At least one physical button normally comes with the touchpad, but the user can also generate a mouse click by tapping on the pad. Advanced features include pressure sensitivity and special gestures such as scrolling by moving ones finger along an edge. Joysticksjoystick.jpg Joysticks are often used to control video games, and usually have one or more push-buttons whose state can also be read by the computer. A popular variation of the joystick used on modern video game consoles is the analog stick. Joysticks are also used for controlling machines such as cranes, trucks, and underwater unmanned vehicles. Types of Keyboard What is Keyboard? Keyboard is a set of typewriter that enable to you to enter data into the computer. The key on the computer keyboard got alphanumeric keys, punctuation keys, and special keys. There are several types of keyboard. For examples, notebook keyboard, PDA stylus, Tablet PCs, Wireless keyboard, and Ergonomic keyboard. For notebook keyboard will with the screen and the CPU. Keyboards on laptops and notebook computers more often than not have a shorter travel distance for the keystroke and a reduced set of keys. They may not have a numerical keypad, and the function keys may be placed in locations that different from their placement on a standard, full-sized keyboard. The layout is based on the 104-key Windows design, except the keys are crammed into the available space. There is no numeric keypad, but you can see the labels on keys in the middle of the keyboard where it is superimposed (the letter J has the numeral 1 on it, K is 2, and so on). The Fn key in the lower left i s used to activate particular options when used in combination with the function keys at the top of the keyboard. z_011204note.jpg PDA Stylus images11 PDA stylus is a touch type keyboard. That a keyboard is needed for extensive typing, a person can use a fold up keyboard. The fold-up keyboards have all of the room of usual keyboards, yet still compact. Tablet PCs Keyboard Tablet PCs keyboard is the the majority common peoples in the world using. It use to type any data into the computer. It have a place for number keys, alphanumeric keys, punctuation keys, and special keys. Wireless Keyboard imagesCAH7GN2X.jpg Wireless Keyboard is the newest keyboard that came out this few years. The keyboard can use without wire, but the others function are same with the normal keyboard that we use. Ergonomic Keyboard images112 Ergonomic keyboard is computer keyboard designed with ergonomic considerations to minimize muscle strain and a host of related problems. An ergonomic keyboard may decrease muscle strain and reduce risk of Carpal Tunnel syndrome, but there is no clear evidence of benefit. After a user takes the time to adjust to this style of keyboard, these keyboards can make typing easier, faster and less awkward. The keys separated into two or three groups, allowing the user to type at a different angle than the typical straight keyboard. Types of Printer Printer is classified into 3 types. There are impact printer, nonimpact printer and specialty printer. The example of impact printer is Dot-matrix. Dot matrix printers are still commonly used in low-cost, low-quality applications like cash registers, or in demanding, very high volume applications like invoice printing. dot matrix printer.jpg The nonimpact printers have Inkjet and Laser. For the Inkjet, operate by propelling variably-sized droplets of liquid or molten material (ink) onto almost any sized page. They are the most ordinary type of computer printer for the universal consumer. The laser is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. But the price will more expensive than others. laser.jpgliquid inkjet.jpg Inkjet Printer Laser Printer Specialty Printersmultifunction.jpg The specialty printers have multifunction, plotters and thermal printers. A multifunction printer is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business setting or to provide centralized document management/ distribution/ production in a large-office setting. A typical multifunction printer may act as a combination of some or all of the printer, scanner, photocopier, fax and email. Plotterplotter.jpg Plotter is a computer printing device for printing vector graphics. In the past, plotters were generally used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. It uses a pen that moves over a large revolving sheet of paper. Thermal Printerthermal.jpg A thermal printer produces a printed image by selectively heating coated thermo chromic paper, or thermal paper as it is generally known, when the paper passes over the thermal print head. The coating turns black in the areas where it is heated, producing an image. Two-color direct thermal printers are capable of printing both black and an supplementary color (often red), by applying heat at two different temperatures. Types of Monitor Monitor is an output device that resembles the television screen and uses a Cathode Ray Tube (CRT) to display information. The monitor is associated with a keyboard for guide input of characters and displays the information as it is keyed in. It also displays the program or application output. Like the television, monitors are also available in different sizes. Liquid Crystal Display (LCD) LCD was introduced in the 1970s and is now applied to display terminals also. Its advantages like low energy consumption, smaller and lighter have paved its way for usage in portable computers (laptops). Devices used to get sound, video, and images into the computer Video capture is one of the most important hardware to be used for multimedia work on a personal computer. Video-capture results will depend on the performance and capacity of all of the components of your system working together. Video capture from analog devices like video camera requires a special Video capture card that converts the analog signals into digital form and compresses the data. Video-capture card use various components of the computer to pass frames to the processor and hard disk. For high-quality video, a video-capture card must be able to capture full-screen video at a high rate. For example for a full-motion video, the card must be capable of capturing about 35 frames per second at 720 by 480 pixels for digital video and 640 by 480 for analog video. To determine what settings will produce the best results for your projects, you must be careful in defining these parameters. A sound card is a device that attaches to the motherboard to enable the computer to input, process, and deliver sound. The sound card generates sounds; records sound from analog devices by converting them to digital mode and reproduce sound for a speaker by reconverting them to analog mode. Creative Labs Sound Blaster is a standard sound card, to the extent that some people use the name as a generic term. A video adapter provides extended capability to a computer in terms of video. The better the video adapter, the better is the quality of the picture you see. A high quality video adapter is a must for you while designing your multimedia project. Conclusion Described is an input and output device for inputting or outputting data of an electronic equipment. The input and output device is designed for being detachably mounted to the electronic equipment in at least two different positions. The input and output device features a first contacting arrangement which, independent of the selected position in the mounted state of the input and output device on the electronic equipment, electrically comes in connection with a second contacting arrangement present on the electronic equipment. In one embodiment, orientation of the device may be varied, thereby enabling it to be coupled to a receiver by a bayonet connection and with a set of contacting arrangement engaging the second contacting arrangement in any orientation. Furthermore, described is an operating and display module, as well as to a combination of an electronic equipment and an input and output device that can be detachably mounted thereto.

The Folly of René Descartes’ Discourse on Method and Meditations on Fir

The Folly of Renà © Descartes’ Discourse on Method and Meditations on First Philosophy In order to embark on his quest for truth, Descartes first devises his four rules which should serve as a solid foundation for all else that he comes to understand. Those rules are here evaluated in terms of what they fail to take into consideration. The rules are examined individually and consecutively, and are therefore also reiterated in order to be clear about them. Furthermore, the approach of using these rules is also analyzed to some degree. Ultimately, however, it is my conjecture that Descartes’ four rules are not as solid a foundation as he claims, but fail to consider key issues which are noted herein. Descartes’ first rule deals with the notion of truth, and states it as follows. The first [rule] was never to accept anything as true that I did not plainly know to be such; that is to say, carefully to avoid hasty judgment and prejudice; and to include nothing more in my judgments than what presented itself to my mind so clearly and so distinctly that I had no occasion to call it in doubt. (11) In essence, we are to accept only what is true. This brings up the question of how one can even know truth. For Descartes, the certain truth is â€Å"I think, therefore I am,† which is his first principle. However, even if this is a certain truth, how can we know anything else to be true? More importantly, however, the first rule states that nothing should be accepted that can be called into doubt, or to accept only that which is indubitable. Yet how can anything be indubitable, save perhaps Descartes’ first principle, and even there some may be able to find flaws? It seems doubtful whether anything can be proven beyond any reas... ..., then there is no thing that is easier to know than another. Descartes’ use of this approach is a false foundation as he does not see these complications. The underlying frailty of such rules is that it assumes absolute truths, without exceptions. I do not know of any truths that are absolute, and do not know of anyone who does. But more importantly, this approach would be much more effective if it was an inductive, and not a deductive, method. With an inductive method Descartes could not be refuted with a single instance, and he would not need to account for all contesting situations. It seems doubtful whether an absolutely deductive method could ever exist, based on the limits of human knowledge. Works Cited Renà © Descartes. Discourse on Method and Meditations on First Philosophy. 4th edition. Trans. Donald A. Cress. Indianapolis: Hackett, 1998.

The Way It Really Was! :: essays research papers

The Way It Really Was!   Ã‚  Ã‚  Ã‚  Ã‚  In the 1950's there were many problems. The Korean war and the civil rights struggle. Back then the music was all rhythm and blues (r &b). It was record mostly by black artists and for black audience but the white teenagers became interested. The music scene in the early 50's   Ã‚  Ã‚  Ã‚  Ã‚  Before 1954 there were 3 distinct music areas. R & B,country and pop. Music stations usually played one type of music so listeners could easily find what type they wanted. Pop had 4 major recording companies. RCA,Columbia,becca and Mercury. These companies had very good connection and could make a small band very big! Pop music had a subdued beat and smooth singing. R & B had black artists for black audiences. Country Western had the least affect by Rock and Roll. People who recorded at small independent music business and put out a record, they were called Indies. The first Rock and Roll hit   Ã‚  Ã‚  Ã‚  Ã‚  The term Rock and Roll was usually used for describing physical sex. Allen Freed was credited with inventing Rock and Roll but that wouldn't be to good for him later in life. The father of Rock and Roll   Ã‚  Ã‚  Ã‚  Ã‚  Alan freed was the first white disc jockey to play Rock and Roll. Alan show in Cleveland was very popular with teenagers. In 1954, Alan's show moved to WINS. His nick name â€Å"moondog† had to be dropped. He adopted the new title â€Å" the king of rock and roll†. Newspapers ran articles saying Alan was the main wrongdoer in creating Rock and Roll. A riot broke out at one of Alan Freed's concert. The police turned up the house lights to see what the teenagers were doing and Alan said something and the teens went on a rampage. Alan was to blame. He was charged but when the manager at WINS didn't stand behind him, Alan left and went to WABC. The charges were later dropped. Because of all of the court appearances, Alan filed for bankruptcy in 1959. In 1960, Alan was fired from WABC for not signing a statement that he took favors to play certain records. It was all down hill from there. In 1965 Alan died. His friends said that he had a drinking problem and it got worse when he was fired. Adult response to Rock and Roll   Ã‚  Ã‚  Ã‚  Ã‚  Most adults did not like Rock and Roll. They thought it was vulgar and rude. Although there was never a link from violence to teens. Many incidences proved that wrong when Nat King Cole was performing and 5 teens jumped on stage and started to beat up him.

The first Olympic Games

The year is 776BC, and in Athens the first Olympic Games are about to start, the festivities have begun with a feast and sacrifices for the gods. The Olympic Spirit was a key part of their society. It was the one-time cultures from all of Greece could come together and celebrate, compete and enjoy. In the past few weeks we have been discussing the pros and cons of different issues and today it's the tur of Olympics. Approximately 2000 years later, what has changed, not much? But this Olympic spirit is ingrained within the Games, the international community spirit along with the best athletes coming together and competing in one of the most prestigious sporting competition in the world. I'd like to give you three reasons to explain why and Why the games will benefit Britain Firstly because of urban regeneration; this has been put at the heart of the London bid, and is a massive benefit to hosting the Olympic Games; there is the opportunity to redevelop areas that are dilapidated and have physical disorders. Although many locations in and around London will be used for Olympic Games the core location for most of the events will be the 500-acre Olympic Park in the Lower Lea Valley in East London, Which stretches over 5 boroughs: namely Tower Hamlets, Hackney, Camden, Greenwich and Stratford. 3 years ago Lower Lea Valley, was literally a dump site, with muggings at an all time high, knife crimes were going up and up. And you know why? Because no one cared about the place, it was considered to be a dirty, dangerous and dilapidated. And know gentlemen, due to the Olympic Committee's regeneration programme, the streets are clean, the alleys are well light The most important venue of the 2012 has been described as an architect's dream. Planned and already in building the 500 acre park promises an excellent site for sporting activities, with over 9 competition events, and is claimed to be the biggest sports site in Europe for nearly 150 years. Outside of the new Olympic Park, which will principally host indoor sports and track and athletic events, all of England will join in as hosts. However it is not just London that is going to benefit. Throughout the countries there will be facilities available. Already the Olympic Committee, has set up brilliant badminton centers in Birmingham, superb swimming pools in Swansea and even mountain biking in Manchester! However to gain the most from the Olympics we need to maximize the legacy effect. Currently the plan is to sell the Olympic stadium to West Ham Football Club, so that they can keep the sporting spirit alive. The legacy effect is in essence the only thing that will keep allow us to maintain the investment of hosting the Olympic Games. Britain, has the highest number of sports fans in the world, we have a pride in our sport, when we hear our national anthem at any event our hearts swell with pride. Recently in the last Commonwealth Games over a thousand British supporters flew out to India to support Team GB. We are proud to be British, Londoner, but the 2012 Olympics is not just about London. It's about team GB, it's about national pride, it's about an amazing, historical event taking place on our doorstep, it's about getting excited and involved, and it's about making sure that we maximise the legacy and the investment. As Lord Coe said â€Å"The Games will inspire the nation and give us the ability to showcase all that is great about Britain.†