0984
Logic Gates and Circuits
Boolean Logic · 5 question types
Exam Frequency Analysis
Past paper frequency (2018 to 2024)
This topic accounts for approximately 9% of your exam marks.
stable
Medium
Stable9%
Truth tables and Boolean expressions from circuit diagrams appear in every paper. 4 to 6 marks.
A logic expression is just an equation that describes a circuit. The output is on the left of =; the inputs and gate operators are on the right. Brackets control the order in which the gates act.
Order of evaluation (always evaluate inside out): innermost brackets first, then NOT, then AND, then OR.