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Program Counter

CU. 101. 100. Program Counter. PC. Multiply no. in 500, 501. Instruction Register. IR. ALU. 378. Accumulator. Acc. 1.The PC contains the address of location 100. 2.CU fetches instruction in location 100. 3. Make a copy of the instruction into the IR. 4. Increment the PC by 1.

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Program Counter

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  1. CU 101 100 Program Counter PC Multiply no. in 500, 501 Instruction Register IR ALU 378 Accumulator Acc 1.The PC contains the address of location 100 2.CU fetches instruction in location 100 3. Make a copy of the instruction into the IR 4. Increment the PC by 1 5. Activate the right circuits to execute the instruction Ms S.Buttigieg

  2. CU 102 101 Program Counter PC Store result in 502 Multiply no. in 500, 501 Instruction Register IR ALU 378 378 Accumulator Acc 1. The PC contains the address of location 101 2. CU fetches instruction in location 101 3. A copy of the instruction is saved in the IR 4. Increment the PC 5. Activate the right circuits to execute the instruction Ms S.Buttigieg

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