Question

Given that P = 0, Q = 1, R = 0, S = 0, write its:

Maxterm

Answer 1

For a Maxterm, we use the “Sum” form (OR gates). The rule is that a variable is uncomplemented if it is 0 and complemented if it is 1.

P = 0 → P

Q = 1 → Q′

R = 0 → R

S = 0 → S

Result: (P + Q' + R + S)

For PQRS = 0 1 0 0, the binary 0100 = decimal 4, so this is maxterm M4.