Computer Science · May / June 2018 · Paper 12 · Question 6

Kelvin correctly answers an examination question about the Von Neumann model. Eight different terms have been removed from his answer. Complete the sentences in Kelvin’s answer, using the list given. Not all items in the list need to be used. • accumulator (ACC) • address bus • arithmetic logic unit (ALU) • control unit (CU) • data bus • executed • fetches • immediate access store (IAS) • memory address register (MAR) • memory data register (MDR) • program counter (PC) • saved • transmits The central processing unit (CPU) the data and instructions needed and stores them in the to wait to be processed. The holds the address of the next instruction. This address is sent to the . The data from this address is sent to the . The instruction can then be decoded and . Any calculations that are carried out on the data are done by the . During calculations, the data is temporarily held in a register called the . [8]

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