Consult, press a button corresponding to light a lamp, how

CodePudding user response:

Want to press you on the circuit diagram, which button which lamp light?

CodePudding user response:

Just received the IO mouth

CodePudding user response:

To solve this problem is very simple, you today I use Windows 7 calculator for any one button click a lamp;
In the upper left button, for example, after the first button of decimal values, with ranks of inversion method

As for matrix scan code reference: https://blog.csdn.net/xianfajushi/article/details/90022291

CodePudding user response:

Another to circuit diagram of each LED should pick up a current limiting resistor, 1 k or simulation may also be wrong.

CodePudding user response:

Detection which button to press the first, the value of the record button, and then based on the value of key lit a lamp! Did not learn microcontroller when I didn't say