1.3.1 Logic Gates

• use logic gates to create electronic circuits
• understand and define the functions of NOT, AND, OR, NAND, NOR and XOR (EOR) gates,
including the binary output produced from all the possible binary inputs (all gates, except the NOT
gate, will have 2 inputs only)
• draw truth tables and recognise a logic gate from its truth table
• recognise and use the following standard symbols used to represent logic gates: NOT, AND, OR, NAND, NOR and XOR gates
• produce truth tables for given logic circuits, for example:
• produce a logic circuit to solve a given problem or to implement a given written logic statement,
such as IF (switch A is NOT on) OR (switch B is on AND switch C is NOT on) then alarm, X,
sounds