Question

The operation, IOWR (active low) performs

(a) write operation on input data

(b) write operation on output data

(c) read operation on input data

(d) read operation on output data

This question was posed to me during an internship interview.

I'm obligated to ask this question of Interfacing I/O Ports in portion Basic Peripherals and their Interfacing with 8086/88 of Microprocessor

Answer 1

Right choice is (b) write operation on output data

Best explanation: IOWR (active low) operation means writing data to an output device and not an input device.