##### How many 32x16 ROMs with enable will be required to construct a

How many 32x16 ROMs with enable will be required to construct a 128x16 ROM and What type of decoder will you need for this design?

(A) 4, 2 to 4 decoder
(B) 4, 4 to 16 decoder
(C) 8, 2 to 4 decoder
(D) 8, 4 to 16 decoder

Answer: A

##### 1Comment
Akshay Saxena akshay0612 11 Jan 2018 11:30 am

$\frac{128 \times 16}{32 \times 16}=4$Rows
To address any row we need $2$ bits.
Therefore $2 \ to \ 4$ decoder will suffice.