* Question
| What is the role of the interrupt enable register? |
* Answer
| The keyboard interrupt enable register is used to set whether to open the 8-pin keyboard interrupt function of the A port. A clear bit disables the keyboard interrupt of the pin, and writing l allows the corresponding pin to be used as a keyboard interrupt, allowing the interrupt request to be interrupted.The internal pull-up Resistors corresponding to the pin is also turned on. |
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