Write short notes on: I/O Ports

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Module 2: The 8051 Architecture

20227m

Write short notes on: I/O Ports

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Short Notes: I/O Ports – see Q119/21

4×8-bit ports P0-P3 quasi-bidirectional, P0 AD multiplexed, P2 high address, P3 alternates (RxD/TxD/INT/Timer/WR/RD), P1 pure I/O. Write 1 for input. Each port SFR latch+driver.

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