Central Processing Unit (CPU)

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43 Central Processing Unit (CPU) Questions And Answers

41⟩ Explain RISC technology?

RISC stands for Reduced Instruction Set Computing.

★ It uses a small subset of instructions to carry out processes.

★ As the number of instructions are lesser, the speed of processing is much improved and faster.

★ However, when complex operations are dealt with, they have to be broken down into a series of smaller instructions.

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42⟩ Explain what is cache memory?

It is a temporary memory storage area which helps to speed up data transfer within a computer. A Microprocessor looks for the data in the Cache memory as the data transferred Cache is much faster. If the data is not found in the cache, the CPU looks for it in the memory.

The following are two types of Cache:

Internal or Level 1: In this, the Cache is built into the Microprocessor.

External or Level 2: In this, the Cache is built on a separate chip.

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43⟩ Explain Memory Components?

Some of the memory components are:

★ Semiconductor Memory:

It is used by most by most modern computers. It is reliable, inexpensive and compact. However, it requires continuous power supply and data is lost if current is interrupted.

★ RAM and ROM:

They stand for Random Access Memory and Read Only Memory respectively.

★ Flash Memory:

This memory is electrically erasable and re programmable.

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