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[WORD]
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- 2012-11-26
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Description: Please write a program, set the 8255A' s PA, PB, PC port are working in the mode 0, the PB port data output port to take anti-evacuation PA with C port set/reset function, in 8255 the port outputs a positive pulse PC7 (pulse width count.) The address of 8255: PA mouth as 160H, PB mouth as 161H, PC port is 162H, 163H control port
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