Question

In the I/O mode, the 8255 ports work as

(a) reset pins

(b) set pins

(c) programmable I/O ports

(d) only output ports

This question was posed to me in semester exam.

My doubt is from Modes of Operation of 8255 in chapter Basic Peripherals and their Interfacing with 8086/88 of Microprocessor

Answer 1

Correct option is (c) programmable I/O ports

For explanation I would say: In the I/O mode, the 8255 ports work as programmable I/O ports.