Central Processing Unit Q.47
- Option : B
- Explanation : a = 1
b = 10 Let a is in Accumulator than for b and c we want c = 20 Register than 2 registers want till now 1 for b and 1 for c
d = a + b N ow d = a + b can be stored in Accumulator because we don’t want a again
e = c + d. Now for f we wan’t next, one register because we wan’t c & e again
f = c + e
b = c + e. Now at b = c + e we can store value in register b already, so we don’t want another
e = b + f. Now at e = b + f we can store it in 0 register of b because we don’t want another
d = 5 + e Now at d = 5 + e we can store it in d because we don’t want e again
than we can say only 3 registers we want.
