Which one of the statements shown below about the control unit is true?

Question

BlackTom AI · Accepted Answer

When evaluating statements about the control unit in a CPU, we need to focus on its role in managing and coordinating signals inside the processor.
Option a: 'The control unit permanently stores all the programming instructions that are required to control and manage the hardware.' This is inaccurate because the control unit does not permanently store all program instructions; memory components like ROM or RAM store instructions, while the control unit fetches and interprets them during execution.
Option b: 'The control unit only receives electrical signals.' In reality, the control unit both receives signals from various parts of the system and actively sends control signals to other components. Saying it only receives signals ignores its essential role in issuing commands.
Option c: 'The control unit is the brain of the CPU, so it only sends instructions to other parts of the digital system in the form of analogue signals.' While the control unit can be described as the brain in a metaphor, its outputs are electrical digital signals, not analogue signals. Also, it does not only 'send instructions' without also coordinating and interpreting incoming data; this statement mischaracterizes the signal nature and scope of its activity.
Option d: 'The control unit receives and sends electrical signals.' This captures the core function: it interfaces with other CPU components by receiving signals (such as status or instruction fetches) and sending control signals to orchestrate timing, data flow, and operation sequencing, typically in digital electrical form. The phrasing aligns with how control units operate within computer architecture, emphasizing bidirectional signaling and orchestration rather than storage or analogue outputs.

Which one of the statements shown below about the control unit is true?单项选择题

类似问题

Which one of the statements shown below about the control unit is true?

Which part of a central processing unit is responsible for sending and receiving instructions?

Question at position 29 The ________ is the part of the processor that manages the movement of data through the CPU.cachearithmetic logic unitcontrol unitdata bus

True or false: The control unit is only responsible for receiving instructions from hardware devices.

The Blank ______ unit, within the CPU, interprets software instructions and literally tells the other hardware devices what to do, based on the software instructions.

A project has a required return of 12.6 percent, an initial cash outflow of $42,100, and cash inflows of $16,500 in Year 1, $11,700 in Year 2, and $10,400 in Year 4. What is the net present value?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单