- Category:
- SCM
- Tags:
-
[WORD]
- File Size:
- 66.76kb
- Update:
- 2008-10-13
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- Uploaded by:
- qingzhang_007
Description: The subject requires the use of LED16* 16 show that the design interface matrix rolling display of Chinese characters. Using 8255 cpu and display peripherals LED link. 16* 16LED is linked to the cathode 16, anode 16 linked to the diode matrix 256, when the anode is high, the cathode is low, the light-emitting diodes. Of A through 8255 before I received eight, high effective, C after I received eight, high effective, B I take pre-8 line, active-low.
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