INPUT DEVICES 1. Where does the name QWERTY keyboard come from ? The name QWERTY comes from the first six letters on the top row of the alphabet keys. 2. Why do think the QWERTY keyboard is the most popular method of data entry? The QWERTY keyboard is the most popular method of entering data because an easy way of usage and when you get used to it you start typing faster 3. Who might make use of a concept keyboard? A concept keyboard might be used by a fast food restaurant
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this web page when writing a term paper about the history of computers? A Brief History of Computer Technology A complete history of computing would include a multitude of diverse devices such as the ancient Chinese abacus‚ the Jacquard loom (1805) and Charles Babbage’s ``analytical engine’’ (1834). It would also include discussion of mechanical‚ analog and digital computing architectures. As late as the 1960s‚ mechanical devices‚ such as the Marchant calculator‚ still found widespread application
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Master Akinyemi Akintunde (A.K.A LAGBE) Computer package Hand Hand- Book powered by www.lagbeglobal.net What is a Computer? A computer is a programmable machine. The two principal characteristics of a principal computer are: it responds to a specific set of instructions in a well-defined manner defined and it can execute a prerecorded list of instructions (a program). Modern Computers Defined Modern computers are electronic and digital. The actual machinery -- wires‚ transistors
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Pointing Devices are direct entry input devices. They allow users to control the pointer and the insertion point on the screen. Examples of pointing devices are mouse‚ trackball‚ touch pad‚ pointing stick‚ joystick‚ touch screen‚ light pen and graphics tablets. A mouse is a computer device‚ which has a ball sealed at the bottom. It is attached with a cable to the system unit. When rolled on the flat surface‚ the movement of the ball will generate electrical circuits‚ which are then sent to the
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Etymology The first recorded use of the word “computer” was in 1613 in a book called “The yong mans gleanings” by English writer Richard Braithwait I haue read the truest computer of Times‚ and the best Arithmetician that euer breathed‚ and he reduceth thy dayes into a short number. It referred to a person who carried out calculations‚ or computations‚ and the word continued with the same meaning until the middle of the 20th century. From the end of the 19th century the word began to take on its
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INPUT DEVICES 1. Where does the name QWERTY keyboard come from ? The name QWERTY comes from the first six letters on the top row of the alphabet keys. 2. Why do think the QWERTY keyboard is the most popular method of data entry? The QWERTY keyboard is the most popular method of entering data because an easy way of usage and when you get used to it you start typing faster 3. Who might make use of a concept keyboard? A concept keyboard might be used by a fast food restaurant
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Communication devices Types Communication Devices FAX E-MAIL VIDEO CONFERRENCE PORTABLE MEDIA PLAYERS BLUETOOTH COMPUTERS FAX Fax is short for ‘facsimile’ which means ‘copy’. A fax machine is a device that can send a copy of a paper document over the telephone network. The sending fax converts the light/dark areas of the printed document into noises. These noises travel through the phone system and are received by another fax machine. The receiving fax machine converts the noises into printed
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Input Devices QWERTY Keyboard The keyboard is the most common type of input device. In other countries‚ the keyboard layout is different due to their different language and characters. There are some variations of keyboards to the normal keyboard. Some are wireless which means that no wire is required to connect it to the PC; and some have ergonomic design‚ which have a special design in order to reduce muscular stress on the user. Mouse The mouse is a pointing device which is used to move
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Chapter 2 StRATEGY and sustAINABILITY Review and Discussion Questions 1. Can a factory be fast‚ dependable‚ flexible‚ produce high-quality products‚ and still provide poor service from a customer’s perspective? Yes‚ if a customer’s needs are not considered and does not influence strategy development‚ an organization could be delivering the wrong service or product. Even though the product is of high quality‚ delivered quickly‚ and offers many options and features‚ overall service could
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1. Introduction to Network Devices All networks are made up of basic hardware building blocks to interconnect network nodes‚ such as Network Interface Cards (NICs)‚ Bridges‚ Hubs‚ Switches‚ and Routers. In addition‚ some method of connecting these building blocks is required‚ usually in the form of galvanic cable (most commonly Category 5 cable). Less common are microwave links (as in IEEE 802.12) or optical cable ("optical fiber"). An ethernet card may also be required. Network interface cards
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