Introduction - If you have any usage issues, please Google them yourself
51 c 1. Lights flickered 2. Wasted lights bits shifted to the right three. Four keys judgment. Digital static show of five. Few Dynamic Display code of 6 X4 keyboard identification .4 7. Press interrupted judgment methods 8. Timer T0 Application--- 9. 9 9 seconds time design. PC communication with the MCU 10 .24 read and write operation C08