Combinations of logic gates are used when digital signals are processed.
Describe the difference between a digital signal and an analogue signal.
The table below is the truth table for a logic gate X.
input Ainput Boutput001011101110 \begin{array}{|c|c|c|} \hline \text{input A} & \text{input B} & \text{output} \\ \hline 0 & 0 & 1 \\ \hline 0 & 1 & 1 \\ \hline 1 & 0 & 1 \\ \hline 1 & 1 & 0 \\ \hline \end{array} input A0011input B0101output1110State the name of logic gate X and describe the symbol that represents it.
Logic gate Y is identical to logic gate X. Describe how a combination of logic gates X and Y can be connected to behave like an AND gate. Label the inputs A and B, and label the final output Q.
67 exam-style questions on CIE IGCSE Physics 4.3.3 Action and use of circuit components. Each one has a worked solution and a mark scheme showing where the marks go.