Computer Studies·Logic gates · NSSCO 4.3
Logic gates & truth tables: AND, OR, NOT, NAND, NOR, XOR
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Deep inside every computer, tiny switches make yes/no decisions. In this lesson you meet the six logic gates, learn to read their symbols, build a truth table for each one, and then combine gates into a small circuit and work out its truth table row by row.
What you'll learn in this lesson
By the end you should be able to (NSSCO Computer Studies 4.3):
- Recognise the symbols and describe the use of AND, OR, NOT, NAND and NOR and XOR gates
- Interpret simple logic circuits using a truth table
- Produce truth tables for given logic circuits (maximum of 2 inputs and 4 gates)
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Miss Maria and Mike talk through the whole topic — with the figure and working drawn live.