AQA · GCSE · Computer Science · Higher
Boolean expression from logic circuit
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Marking points
- 1 Combines B and C using the correct AND symbol.
- 2 Combines the two circuit branches using the correct OR symbol.
- 3 Shows NOT A with an unambiguous overbar over A.
Full-mark answer
Q = overline{A} + B cdot C
Why this answer loses marks
I wrote the gate operations as words instead of Boolean symbols.
The circuit must be represented with the required Boolean operator notation while preserving its operation order.
