The invention that led to the computer keyboard was typewriter, patented by Christopher Latham Sholes in1868. When it was first introduce, the keyboard (In Typewriter) had character arranged alphabetically but it led to jam on pressing the neighboring key in succession. This led to the arrival of QWERTY keyboard layout. When introduced in computers same QWERTY layout was followed with certain addition key like arrow key and function key. In addition to this a separate numeric keypad is also introduced with others key like Home, Delete, Page UP, Page Down etc. After that keyboard has gone through the various changes. Wireless keyboard, multimedia keyboard were also introduced.
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