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1. IAS/Von Neumann Architecture (10 marks) The table shows a segment of primary memory from a Von Neumann model computer. \begin{tabular}{|l|l|} \hline Address & Contents \\ \hline 10001 & 11001101 \\ \hline 10010 & 11110001 \\ \hline 10011 & 10101111 \\ \hline 10100 & 10000110 \\ \hline 10101 & 00011001 \\ \hline 10110 & 10101100 \\ \hline \end{tabular} The program counter contains the data 10010. (a) What value does the Memory Address Register (MAR) contain. [2 marks] (b) What register will contain the data from the location with address $=10010$ [ 2 marks] (c) The following table summarizes the seven steps used by a von Neumann machine to execute an instruction. Put each stage in the correct sequence by writing the numbers 1 to 7 in the correct order. The first one has been done for you. [6 marks]

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