Computer practice question for SSC. Select an option to check your answer, read the explanation and continue practicing.
In a computer, which unit is responsible for processing data and is also called the electronic brain of the computer?
Correct Answerसही उत्तर
A. Central Processing Unit (CPU)A. सेंट्रल प्रोसेसिंग यूनिट (CPU)
Explanationव्याख्या
The correct answer is the Central Processing Unit (CPU).
According to the source, the CPU is considered the electronic brain of the computer.
The book states that it consists of a Memory, Control Unit and Arithmetic Logic Unit.
It further explains that the CPU performs basic arithmetic, logic, controlling and input
output operations specified by instructions in a program.
Therefore the complete source-supported revision chain is: CPU — Central Processing Unit — electronic brain of computer — processing data — Memory — Control Unit — Arithmetic Logic Unit — arithmetic operations — logic operations — controlling operations — input
output operations according to program instructions.
Hard Disk, RAM and Keyboard are distractors.
This question reinforces Q668, where the book also identifies the CPU as the brain of the computer.
However, Q674 gives more detail about the CPU's internal functional components and operations.
The statement that the CPU 'consists of a Memory, Control Unit and Arithmetic Logic Unit' is preserved exactly as the source's wording.
No attempt has been made to alter or reconcile its terminology using a different architecture model.
The source does not discuss registers, clock speed, cores, instruction cycles or processor manufacturers in this entry.
Quick revision: CPU = Electronic Brain — Memory + Control Unit + ALU according to source — performs Arithmetic, Logic, Control and I
O operations.
Therefore option (a) is correct.
सही उत्तर Central Processing Unit अर्थात CPU है। स्रोत के अनुसार CPU को computer का electronic brain माना जाता है। Book बताती है कि इसमें Memory, Control Unit और Arithmetic Logic Unit होते हैं। Source आगे कहती है कि CPU program instructions के अनुसार basic arithmetic, logic, controlling और input/output operations perform करता है। इसलिए complete source-supported revision chain है: CPU — Central Processing Unit — Electronic Brain of Computer — Data Processing — Memory — Control Unit — Arithmetic Logic Unit — Arithmetic Operations — Logic Operations — Controlling — Input/Output Operations। Hard Disk, RAM और Keyboard distractors हैं। यह question Q668 के concept को reinforce करता है, जहां CPU को brain of computer कहा गया था। Q674 अतिरिक्त information देती है कि source के अनुसार CPU किन units से बना है और क्या operations perform करता है। 'CPU consists of a Memory, Control Unit and Arithmetic Logic Unit' wording source से preserve की गई है; इसे किसी अलग computer architecture model के आधार पर silently modify नहीं किया गया। Source registers, cores, clock speed, instruction cycle या processor manufacturers की details नहीं देती। Quick revision: CPU = Electronic Brain — Source के अनुसार Memory + Control Unit + ALU — Arithmetic + Logic + Control + I/O Operations। इसलिए विकल्प (a) सही है।
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