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EnglandComputer ScienceQuick questions
1.4 Data types, data structures and algorithms
Quick questions on Half adders, full adders and D-type flip-flops - OCR A-Level Computer Science H446
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
Give the Boolean expressions for the sum and carry outputs of a half adder. [2 marks]
What is q2?Show answer
State why a full adder, rather than a half adder, is used for all but the least significant bit when adding multi-bit numbers. [2 marks]
What is q3?Show answer
State what happens to a D-type flip-flop's output on the rising edge of the clock. [1 mark]
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