CPU1- Introduction to CPU Flashcards

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1
Q

What does CPU stand for?

A

Central Processing Unit

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2
Q

What is CPU?

A

CPU gather and execute instructions in their order.
Control peripherals.

It is the brain of a computer. The police traffic in a cross road.

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3
Q

Who is the father of CPU?

A

John von Neumann

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4
Q

Draw Von Neumann Architecture.

A

Input —-> CPU ——> Output Unit
ALU
|
v
Control Unit
^ |
| v
Main Memory

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5
Q

What are the components of CPU

A

ALU (Arithmetic and Logic Unit)
CU (Control Unit)
Registers
Program Counter
System Clock

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6
Q

Explain Arithmetic and Logic Unit.

A

Performs execution of instructions such as Arithmetic (+-x/), Comparison (>=<) and Logic (True or False)

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7
Q

Explain Control Unit

A

Directs and coordinates operations in computer
Performs fetch-execute cycle

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8
Q

Registers

A

High speed storage.
Fastest memory in memory hierarchy
Data can only be acted upon CPU when they are stored in registers

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9
Q

Explain Program Counter.

A

Address pointer
Register address of currently executing instructions
Counter value increases by 1 when each instructions get fetched

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10
Q

Explain System Clock

A

Microprocessor that regulates timing and speed of computer system’s functions
one clock= one vibration of clock chip
speed of computer’s CPU is measured in Hz
3.8GHz= 3.8 billion clock vibrations per second

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