Draw the symbol for an XOR logic gate and complete the truth table for it. XOR logic gate symbol: Truth table: A B X 0 0 0 1 1 0 1 1

1. (a)Draw the symbol for an XOR logic gate and complete the truth table for it. XOR logic gate symbol: Truth table: A B X 0 0 0 1 1 0 1 1[2]
2. (b)(i)Consider the logic rules in the following table: Input | Binary value | Description ------|--------------|-------------------- A | 0 | operator not present A | 1 | operator present B | 0 | ignition key present B | 1 | ignition key not present C | 0 | operator code correct C | 1 | operator code not correct A crane is a machine with a long arm used to lift heavy objects. The crane will only move: • if the operator is present and • either the ignition key is present, or the operator code is correct. The crane moving is represented by X = 1. Write the logic expression for the crane moving. X = ..................................................................................................................[2]
3. (b)(ii)Complete the truth table for the crane moving. A B C | Working space | X 0 0 0 | | 0 0 1 | | 0 1 0 | | 0 1 1 | | 1 0 0 | | 1 0 1 | | 1 1 0 | | 1 1 1 | |[4]

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