Question

The data bus buffer is controlled by

(a) control word register

(b) read/write control logic

(c) data bus

(d) none of the mentioned

This question was posed to me by my school teacher while I was bunking the class.

I'm obligated to ask this question of PIO 8255 (Programmable Input in division Basic Peripherals and their Interfacing with 8086/88 of Microprocessor

Answer 1

Correct option is (b) read/write control logic

The explanation: The data bus buffer is controlled by read/write control logic.