Question

a rom is used to implement a squarer which outputs the square of a 4bit number then what is the size of the rom

Answer 1

a 4-bit multiplier there are 24⋅24=2824⋅24=28 combinations.

The output of 4-bit multiplication is 8 bits, so the amount of ROM needed is 28⋅8=204828⋅8=2048 bits.

Answer 2

2048 bits is the correct Answer

Explanation:

• In a 4 bit multiplier, there are:

                24.24 ==> 2824.24 ==> 28 combinations

thus, the output of 4-bit multiplication is 8 bits, so the amount of ROM needed is

           38.8 ==> 204828.8 = 2048 bits

hence, 2048 bits is the correct Answer