8255 PPI के कंट्रोल रजिस्टर में सबसे महत्वपूर्ण बिट (डी 7) को रीसेट (0) करने पर कौन-सा मोड चुना जाता है?
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PPI 8255 is a general purpose programmable I/O device designed to interface the CPU with its outside world such as ADC, DAC, keyboard etc. We can program it according to the given condition. It can be used with almost any microprocessor.
It consists of three 8-bit bidirectional I/O ports i.e. PORT A, PORT B and PORT C. We can assign different ports as input or output functions.
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