Introduction - If you have any usage issues, please Google them yourself
Learn " Speed trigger 8-bit binary up-counter" The purpose of the program is to make people familiar with the use of input and output ports, the functionality of the program as a key counter demo board. Just power, eight light-emitting diodes are lit. Said counter initial value of 0, when the switch is pressed S3 (RB0), the value of the counter and a light-emitting diode D3 lit, indicates a value of 1, and then release the button once again press the switch S3 (RB0) counter value and plus 1, the light emitting diode D4 lights up, indicating that the value 2, etc., repeated cycle.