Input Device-Keyboard Essay

Published: 2020-02-07 11:11:07
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Computer is an electronic machine or device which is available of receiving information(data) in an unread form and of perfoming a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals. Input is a hardware component that allows users to key in or enter data /instruction to a computer. A computer has many types of input devices, for example : keyboard, pointing devices, voice input, digital input, scanners and etc.

Keyboard is a typewriter style device, which uses an arrangement of buttons or keys that lets you to enter data to a computer. Keyboards are available for desktop, laptop computers, PDAs and smart phones. There are around 110 keys on a computer keyboard. Keyboards was invented ny Christopher Sholes who was born in Mooresbud and he was an Amrican mechanical engineer. He invented the first typewriter in 1866. He invented the typewriter together woth his business partners Samuel Soule and Carlos Glidden.

There are two common types of computer keyboards, QWERTY and AZERTY. QWERTY keyboards are the most common keyboards which we are using nowadays. Pronounced kwer-tee, its named by the arrangement on the keyboard which is from the the first six characters on a keyboard. It is the keyboard that have 6 alphabets(Q,W,E,R,T,Y) in the first row. The QWERTY keyboard is invented by Christopher Sholes who is the inventor of the typewriter. AZERTY keyboards that used in French countries. It is keyboard that A, Z, E, R, T, Y at the first row.

Its differences with the QWERTY keyboard is the Q and W have been changed to the A and Z. Another differences is on an AZERTY keyboard M key is left to the L key but the QWERTY keyboard it has been reversed. In every keyboard, there have function keys, control keys, numeric keypad, and arrow keys. All computer keyboards have a typing area which include the letters of the alphabet, numbers, punctuation marks, and other basic keys. On the top of a keyboard is function keys. Function keys are that labeled with F and follow by a number from 1-12.

They are used to key commands to computer. For example, [ALT]+[F4] in Microsoft Window is a command that ask computer to close all the program in a window. In contrast, by only pressing [F4] it will probably nothing to do with the computer. Control keys are a section of keys on your keyboard that enable additional control over a document and the computer. Examples of the control keys are Print Screen, Scroll Lock, Pause, Break, Insert, Delete, Home, Page Up, Page Down and End. Numeric keypad is a separated set of keys on some keyboards.

It is a calculator-style arrangement of keys representing the number 0-9 , a decimal numbers, a decimal point, and some basic mathematics operators. The arrow keys are four directional arrow keys that allow the user to move their cursor and position on a page. On a keyboard, some special keys are available for giving command to the computer without using a mouse to point on the screen and click it. It makes us easier to complete our tasks. While having these special keys, we can using our computer wihtout a mouse too!

A window logo is the key that display and hide the menu, NUM LOCK for 5 seconds that the toggle will be switch on or off, ESC can use to close or cancel a window task, HOME is the key that move to the beginning of the line. Keyboards now have many kind of keyboard. Some are using wireless or bluetooth to connect to our computer but the more high-tech keyboards sure will cost more expensive to a traditional USB connecting keyboards. By using the keyboard, we will not feel tired on handwriting. Nowsaday many paperwork are used to typing by a keyboard to submit to computer, so that keyboards are very useful to our life.

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