Updating a computer's key board

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The computer's key board is an important tool for input.  It has the ability to simplify many tasks with multiple shortcuts in addition to typing.  Usually a key board has 3 to 4 keycaps.  Which has a typing, number and control key.
Keyboard timing keys are arranged in the same way as the old typewriter.  It can be typed alphabetically.  Many languages ​​have the ability to type.  The type key is arranged to fit the fingers of both hands.  It also takes into account the amount of characters consumed.  A 7-digit numeric board adjacent to the main keyboard is attached to the computer after its invention and is used to type and calculate digits.
The keyboard is also a small commuter.  It has a microprocessor and controller.  This is called the circuit of matrices.  If you press any key then the circuit below it is 3.  The signal goes through the power supply and into the computer.  Underneath the key is a rubber strap and a three-layered plastic layer underneath it.  The carbon footprint serves to complete the flow of electricity.  However, now wireless keyboards were also discovered.

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