What is a keyboard controller? PC keyboard controller, freely programmable
Item no. 604
Description
| The controller is a component of the keyboard or a mouse replacement that tells the computer / PC which key of the keyboard matrix is pressed or in which direction a mouse is being moved. | |
| The controller also regulates the switching of the status LEDs, such as the shift lock, NUM lock and scroll lock. | |
| Controllers differ among other things by: | |
| Different exits | |
| Different controllers support different interfaces. In the case of keyboards, these are the AT (PS / 2) or serial interfaces. For mouse input devices, these are PS / 2 or serial. | |
| Different entrances | |
| Keyboards are used as a matrix, trackballs and other mice, on the other hand, are connected to the controller via the quadrature. | |
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