COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Controls the flow of data around the CPU and also decodes instructions
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Only controls the flow of data around the CPU
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Only decodes instructions
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Controls how much power is directed to all components within the computer
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Detailed explanation-1: -A control unit (CU) is an integrated circuit in a processor that controls the input and output. It receives instructions from a program, then passes them to the Arithmetic Logic Unit (ALU). This unit enables the sequential flow of data between the different parts of the Central Processing Unit.
Detailed explanation-2: -The control unit controls all CPU operations, including ALU operations, the movement of data within the CPU, and the exchange of data and control signals across external interfaces (system bus). Registers are high-speed internal memory-storage units within the CPU.
Detailed explanation-3: -The control unit controls the flow of data within the system. The control unit controls and monitors communications between the hardware attached to the computer.
Detailed explanation-4: -In a computer, the control unit often steps through the instruction cycle successively. This consists of fetching the instruction, fetching the operands, decoding the instruction, executing the instruction, and then writing the results back to memory.
Detailed explanation-5: -During the decode stage, the control unit (CU) will decode the instruction in the CIR. The CU then sends signals to other components within the CPU, such as the arithmetic logic unit (ALU) and the floating point unit (FPU).