Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

A 1.2.4 Truth Tables

A truth table lists every possible combination of inputs to a logic system and records the output for each one. This page shows how to build a truth table from a circuit and from a worded problem, how a table and a Boolean expression describe the same function in both directions, and how to derive a table from a logic diagram in order to simplify it. The use of Karnaugh maps and the laws of Boolean algebra to...

Help