KS 4 Electricity Electronic systems Boardworks Ltd 2003
KS 4 Electricity – Electronic systems © Boardworks Ltd 2003
Logic gates can have only one of two values 0 or 1, low or high. As the signals can only have one of two values, they are DIGITAL signals. The outputs for logic gates depend upon the inputs and are shown in a truth table. © Boardworks Ltd 2003
Use a textbook or other resource to fill in the table below: Logic gate Circuit symbol NOT OR AND © Boardworks Ltd 2003
Use a textbook or other resource to fill in the table below: Logic gate Circuit symbol NOR NAND © Boardworks Ltd 2003
NOT Input Output 0 1 1 0 NOT gate inverts the input signal © Boardworks Ltd 2003
OR Input A Input B Output 0 0 1 1 1 0 1 1 Output is 1 if either of the inputs is 1, or if both inputs are 1. © Boardworks Ltd 2003
AND Input A Input B Output 0 0 1 1 1 Output is 1 only if both of the inputs is 1. © Boardworks Ltd 2003
NAND Input A Input B Output 0 0 1 1 1 0 Output is opposite of AND gate. © Boardworks Ltd 2003
NOR Input A Input B Output 0 0 1 0 1 0 0 1 1 0 Output is opposite of OR gate. © Boardworks Ltd 2003
Name this circuit symbol. A. NAND B. NOR C. NOT D. OR © Boardworks Ltd 2003
Name this circuit symbol. A. NAND B. NOR C. NOT D. OR © Boardworks Ltd 2003
Name this circuit symbol. A. AND B. NAND C. NOT D. OR © Boardworks Ltd 2003
Name this circuit symbol. A. OR B. NAND C. NOT D. NOR © Boardworks Ltd 2003
Name this circuit symbol. A. AND B. NAND C. NOT D. OR © Boardworks Ltd 2003
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