The CPU is the brain of the computer where most processing takes place. The Arithmetic Logic Unit performs calculations and logical operations, the Control Unit coordinates all activities by interpreting instructions and registers provide small, fast storage inside the CPU. Together, these elements execute program instructions that drive ICT applications. Thus, this combination correctly represents the main logical components of the CPU.
Option A:
This option correctly reflects textbook descriptions of CPU structure and is commonly tested in ICT-related exams. Understanding these components helps explain how instructions are executed and data is manipulated.
Option B:
Option B lists input and output devices, which are peripherals and not part of the CPU itself. They interact with the CPU but do not constitute its internal structure.
Option C:
Option C includes external devices used for printing and scanning, which again are not CPU components. They rely on the CPU to function.
Option D:
Option D refers to storage devices that hold data and programs. Although essential to a system, they are outside the CPU boundary.
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