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What are the different modes in which 8255 Programmable Peripheral Interface (PPI) can operate?
- Mode 0: A, B, C simple input / output level sensitive ports
- Mode 1: A, B input / output ports along with strobe control in C
- Mode 2: A is bidirectional along with control/handshake in B and C
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Explain in detail the operation of 8255 in mode1 taking suitable example. In mode1, Ports A and B are programmed as input or output ports and Port C is used for handshaking.
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