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An automated warehouse security system triggers an audible alert, AAA.

  • The alert should sound if both the front door sensor, DDD, and the window sensor, WWW, are triggered (value 1).
  • Alternatively, the alert should sound if the system's silent-mode switch, SSS, is inactive (value 0).
  • The output to trigger the alert is AAA.

An incomplete logic circuit for this system is shown below:

An incomplete logic circuit diagram with inputs D, W, and S on the left, and output A on the right. Inputs D and W are connected to Gate X. Input S is connected to Gate Y. The outputs of Gate X and Gate Y are connected to Gate Z.

Identify the three logic gates required to complete this circuit.

  • Gate X:
  • Gate Y:
  • Gate Z:
[3]

Boolean logic Questions

Practise AQA GCSE Computer Science Boolean logic with exam-style questions for GCSE Computer Science. 83 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Boolean logic Questions

  1. GCSE
  2. /Computer Science
  3. /Boolean logic