- Category:
- SCM
- Tags:
-
[ASM]
[源码]
- File Size:
- 1kb
- Update:
- 2013-12-07
- Downloads:
- 0 Times
- Uploaded by:
- 小陈
Description: The use of experimental box 8255A programmable parallel interface chip and matrix keyboard, programming, so each time you press a key mathematics (0 ~ F), with a light-emitting diode code displayed on the keypad. Connection Methods: 8255A keyboard RL10 ~ RL17 pick the PB0 ~ PB7 KA10 ~ KA12 pick 8255A of PA0 ~ PA2 PC0 ~ PC7 pick-emitting diodes L1 ~ L8 chip select signals CS0 8255CS 8255A chip connection
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number display.asm