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Junior Cycle · Junior Cycle Applied Technology

Junior Cycle Applied Technology: Logic gates & truth tables

How often Logic gates & truth tables comes up on the Applied Technology papers, every year it was asked, and questions to try.

CL Asked on 4 of the last 5 Common Level papers, most recently in 2026. most years

Logic gates & truth tables, Common Level(7 marks)

Quick ones on Logic gates & truth tables.

(a)The output of an AND gate is 1 only when?
  1. Either input is 1
  2. Both inputs are 1
  3. Both inputs are 0
(b)A light sensor gives logic 1 in daylight. Which gate makes a lamp come on only when it is dark?
  1. OR
  2. AND
  3. NOT
(c)Which logic gate has only one input and gives the opposite at its output?
  1. NOT
  2. OR
  3. AND
Show the answers

(a) Both inputs are 1

(b) NOT

(c) NOT

Your turn: Common Level questions on Logic gates & truth tables.

Common Level

Asked on 4 of the last 5 Common Level papers, most recently in 2026. most years

Every paper, year by year

YearWhere it came up
2026Q2d(ii), Q2d(iii)
2025Q2f(i), Q2f(ii)
2024Q4b(i), Q4b(ii)
2023Not asked
2022Q2b(i), Q2b(ii)

Links open the State Examinations Commission’s paper for that year.

Other Applied Technology topics

All of Junior Cycle Applied Technology