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COMPUTER SCIENCE 0478/12

Cambridge IGCSE This document has 12 pages. Blank pages are indicated.*6089416953*DC (CJ/CB) 186307/3 UCLES 2020 [Turn overCOMPUTER SCIENCE 0478/12 Paper 1 Theory February/March 2020 1 hour 45 minutesYou must answer on the question additional materials are Answer all questions. Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. Write your name, centre number and candidate number in the boxes at the top of the page. Write your answer to each question in the space provided. Do not use an erasable pen or correction fluid.]

2 UCLES 2020 0478/12/F/M/20 1 The Von Neumann model for a computer system uses components, such as registers and buses, in the fetch-execute cycle. (a) Draw a line to connect each component to its correct description. Component Description Control Bus Increments to point to the address of the next instruction to be fetched

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