Computer keyboard with reorganizable keys
A computer and key technology, applied in the field of computer keyboards, can solve the problem of large keyboard area, and achieve the effect of reducing the occupied area
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] In order to describe the principle of the key-value circuit of the present invention, figure 1 A simple example is given, which means that n input lines (I / O ports) can be used to represent up to 2 n – 1 key-value. For n input lines, all states have a total of 2 n One, where n bits are all "1" to indicate no button; at least one of the n bits is "0" to indicate the state of a key pressed (the input I / O line is pulled low by the corresponding diode level). According to this simple combination principle, n I / O lines can form 2 n – A simple combined keyboard circuit with 1 key, referred to as an n-order simple combined keyboard circuit. like figure 1 The essence of the 3-order simple combined keyboard circuit is a typical 8-3 line binary encoder in digital circuits.
[0024] Utilizing this n-order simple combination keyboard circuit can realize n...
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