Question

A microprocessor with 12-bit address bus will be able to access ______ kilobytes of memory
1. 0.4
2. 2
3. 1
4. 4

Answer 1

Correct Answer - Option 4 : 4

Concept:

To access memory of 2n RAM i.e. to address 2n memory locations, the address line required are n.

That is, n bit address line can access 2ⁿ bits of memory. 

Analysis:

We have a 12-bit address line.

∴ 2¹² = 4 kilobytes of memory can be accessed.

∵ 1024 bits = 1 kilobytes