Saturday, December 25, 2010

Keyboard

Creation of a computer keyboard in typewriter inspired by the basic design is made and patented by Christopher Latham in 1868 many are marketed in 1877 by the Remington Company. The first computer keyboards adapted from punching cards and writing distance delivery technology ( teletype ). In 1946, The ENIAC computer using a card reader makers hole ( punched card reader ) as a means of input and output.

When you hear the word " keyboard ", then our mines can not be separated from the existence of a computer, because the keyboard is a board consisting of the key to type a sentence and other special symbols on the computer. On the keyboard buttons have a letter A - Z , number 0 - 9 , keys and special characters such as : "~@#$%^&*()+_|! , and other special buttons that total number was 104 keys. While on typewriter tuts number is 52 keys. The keyboard is generally rectangular, but the current model keyboard is very varied.

Previously, people who use typewriters both regular and electric typewriters. The keyboard has a similar form and function to a typewriter, the difference is the result of output or appearance. If use a typewriter, you can not remove or undo anything that has type and every single letter or symbol you type in the result you saw in the paper directly. Not so with the keyboard, what you type in the result or output can be seen on the monitor screen first, than you can modify or make changes to a form of writing, typing and other errors. Like "the mouse", the keyboard is connected to a computer with a cable located on computer and inserted into the port located on the CPU.

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