CPU1- Introduction to CPU Flashcards
What does CPU stand for?
Central Processing Unit
What is CPU?
CPU gather and execute instructions in their order.
Control peripherals.
It is the brain of a computer. The police traffic in a cross road.
Who is the father of CPU?
John von Neumann
Draw Von Neumann Architecture.
Input —-> CPU ——> Output Unit
ALU
|
v
Control Unit
^ |
| v
Main Memory
What are the components of CPU
ALU (Arithmetic and Logic Unit)
CU (Control Unit)
Registers
Program Counter
System Clock
Explain Arithmetic and Logic Unit.
Performs execution of instructions such as Arithmetic (+-x/), Comparison (>=<) and Logic (True or False)
Explain Control Unit
Directs and coordinates operations in computer
Performs fetch-execute cycle
Registers
High speed storage.
Fastest memory in memory hierarchy
Data can only be acted upon CPU when they are stored in registers
Explain Program Counter.
Address pointer
Register address of currently executing instructions
Counter value increases by 1 when each instructions get fetched
Explain System Clock
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