Question

Data is written in IC 7489 through ____________

(a) Chip select

(b) Enable

(c) Data input

(d) Memory enable

The question was asked by my school teacher while I was bunking the class.

I would like to ask this question from Random Access Memory topic in chapter Memory Devices of Digital Circuits

Answer 1

Correct choice is (c) Data input

Easy explanation: Data can be written into the memory via the data inputs by supplying an address to the SELECT inputs and holding both the memory enable and write enable LOW.