Suppose that a 4M X 32 main memory is built using 1M X 8 RAM

Suppose that a 4M X 32 main memory is built using 1M X 8 RAM chips and memory is word addressable.

a)How many RAM chips are necessary? ______

b)How many RAM chips are needed for each memory word? _______

c)How many address bits are needed for each RAM chip? _______

d)How many address bits are needed for all memory? _______

Let L1=4M,W1=32,L2=1M,W2=8

a) i.e (L1/W1)/(L2/W2)

=(4*32)/(1*8)

=16 chips

b)I.e= (L1/L2)

=(4/1)

=4 chips

c) 4M=4*2^20

2^2=2^2*2^20

2^2=2^21

=22 adress lines

d)4194304 bits