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Which of the following statements are true about a CPU? i. The CPU stands for Central Processing Unit. ii. The CPU performs arithmetic, logical, control, and input/output operations. iii. The CPU is considered the brain of the computer. iv. The CPU is responsible for long-term storage of data on the hard drive.
i, ii and iii
i, iii and iv
ii, iii and iv
i, ii and iv
i, ii and iii
The CPU (Central Processing Unit) acts as the primary component of a computer that executes instructions, performs calculations, and coordinates hardware activities. Statement iv is false because the CPU is responsible for volatile processing, while storage of data on a hard drive is managed by secondary storage controllers and I/O subsystems.
ISO/IEC 2382:2015
The CPU (Central Processing Unit) acts as the primary component of a computer that executes instructions, performs calculations, and coordinates hardware activities. Statement iv is false because the CPU is responsible for volatile processing, while storage of data on a hard drive is managed by secondary storage controllers and I/O subsystems.
Throughput=TimeInstructionsтАЛ
CPU┬аTime=Instructions├ЧCPI├ЧClock┬аCycle┬аTime
The CPU operates on the Fetch-Decode-Execute cycle. It fetches instructions from memory, decodes them to understand the required action, and executes them using the Arithmetic Logic Unit (ALU) for computations or the Control Unit (CU) for hardware signaling.
The CPU includes the ALU, CU, and Registers.
Data storage on the hard drive is handled by non-volatile storage controllers, not the CPU itself.
The CPU processes instructions sequentially or via pipeline architectures.
High-speed instruction processing
Ability to execute complex logical operations
Limited volatile cache memory capacity
High heat dissipation during intensive processing
General purpose computing
Embedded system control
The CPU is classified by clock speed (measured in Hz, GHz) and core count.
Statement iv is incorrect as the CPU provides data to storage, but the hard drive controller manages physical persistence.
A is correct тАФ Statements i, ii, and iii accurately describe the function and status of the CPU in a computer architecture.
Always distinguish between primary memory (RAM/CPU cache) and secondary storage (HDD/SSD) as competitive exams frequently test this hierarchy.
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