COMPUTER PERIPHERALS
MOBILE DEVICES AND SMARTPHONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Decode the instruction
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Save the instruction
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Execute the instruction
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Convert the instruction
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Detailed explanation-1: -The CPU copies the data from the data bus into its MDR (also known as MBR; see Role of components section above) A fraction of a second later, the CPU copies the data from the MDR to the instruction register for instruction decoding. The PC is incremented so that it points to the next instruction.
Detailed explanation-2: -Fetch – gets the next program command from the computer’s memory. Decode – deciphers what the program is telling the computer to do. Execute – carries out the requested action. Store – saves the results to a Register or Memory.
Detailed explanation-3: -To execute an instruction, the processor copies the instruction code from the program memory into the instruction register (IR). It can then be decoded (interpreted) by the instruction decoder, which is a combinational logic block which sets up the processor control lines as required.