(a)[2]
State how an analogue signal differs from a digital signal. A diagram may be drawn to support your answer.
(b)[1]
Draw the symbol of a NOR gate.
(c(i))[2]
From Table 8.1, deduce: 1. the identity of logic gate X 2. the identity of logic gate Y.
(c(ii))[2]
Complete column F in Table 8.1.