Truth tables

QuizÂ by GCSE Computer Science Teacher 3

GCSE (AQA)

Computer Science

English National Curriculum

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### Measures 1 skill fromGCSE (AQA)Computer ScienceEnglish National Curriculum

Measures 1 skill from

GCSE (AQA)

Computer Science

English National Curriculum

3.4.2.a

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14 questions

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- Q1What is a truth table?They determine the output of one inputThey list all the possible inputs and outputs of a logic gateThey work out if a statement is true or notThey list only the inputs of a logic gate60s3.4.2.aEditDelete
- Q2The truth table above is for which gate?a AND BNOT aa OR ba XOR b45s3.4.2.aEditDelete
- Q3The above truth table is for which gate?a AND bNOT aa OR ba XOR b45s3.4.2.aEditDelete
- Q4The above truth table is for which gate?NOT aa AND ba OR ba XOR b45s3.4.2.aEditDelete
- Q5The above truth table is for which gate?(NOT a) AND bNOT a XOR bNOT a AND bNOT a OR b60s3.4.2.aEditDelete
- Q6The above truth table is for which gate?(NOT a) AND bNOT a AND b(NOT a) NOT b(NOT a) OR b60s3.4.2.aEditDelete
- Q7If a truth table with two inputs will have 4 rows, how many must a truth table with three input have?8761260s3.4.2.aEditDelete
- Q8Which formula correctly represents the maximum number of rows in relation to the number of inputs?max_rows = inputs^2max_rows = inputs + 2max_rows = inputs * 2max_rows = max_rows - inputs60s3.4.2.aEditDelete
- Q9In what order would these inputs be displayed in a truth table?Z, C, B, AA, C, Z, BA, B, C, ZA, B, Z, C60s3.4.2.aEditDelete
- Q10What is the missing value?0160s3.4.2.aEditDelete
- Q11Why is C is not considered when deciding how many inputs there are, and therefore how many rows are needed in the truth table?Because C is only an inputBecause C is also an outputBecause it is easier to not include CBecause you can only include pairs of inputs60s3.4.2.aEditDelete
- Q12How many of these are both inputs AND outputs?164260s3.4.2.aEditDelete
- Q13How many of these are only inputs?642160s3.4.2.aEditDelete
- Q14What is one disadvantage of truth tables for combined logic gates?It time taken to draw one does not outweigh the outcome of the processIf you make a mistake earlier in the table it will make the rest of the results in that row invalidIt is not an efficient way of testing for possible outcomesIt is easier to not use a truth table60s3.4.2.aEditDelete