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Computer: Lecture no 2
Lecture no 2
<!--[if !supportLists]-->ó <!--[endif]-->Types Of Computer
These
are the types of Computer.
<!--[if !supportLists]-->ó <!--[endif]-->Super Computer
<!--[if !supportLists]-->ó <!--[endif]-->Main Frame Computer
<!--[if !supportLists]-->ó <!--[endif]-->Mini Computer
<!--[if !supportLists]-->ó <!--[endif]-->Micro Computer
<!--[if !supportLists]-->ó <!--[endif]-->Lap Top Computer
<!--[if !supportLists]-->v
<!--[endif]-->Super Computer
<!--[if !supportLists]-->ó <!--[endif]-->Very large in a size.
<!--[if !supportLists]-->ó <!--[endif]-->Very Expensive
<!--[if !supportLists]-->ó <!--[endif]-->Normally not available in a
private sectors.
<!--[if !supportLists]-->ó <!--[endif]-->Used for Atomic Research and
weather forecasting.
<!--[if !supportLists]-->ó <!--[endif]-->Cray1 was the first super
computer.
<!--[if !supportLists]-->v <!--[endif]-->Mainframe Computer
<!--[if !supportLists]-->ó <!--[endif]-->Smaller then Super Computer
<!--[if !supportLists]-->ó <!--[endif]-->Store huge amount of Data.
<!--[if !supportLists]-->ó <!--[endif]-->Used in Nadra offices ,PIA and
Banks,
<!--[if !supportLists]-->v Mini Computer
<!--[if !supportLists]-->ó <!--[endif]-->Smaller then Super and Mainframe
Computers.
<!--[if !supportLists]-->ó <!--[endif]-->Used in Universities and
embassies.
<!--[if !supportLists]-->v Micro Computer
<!--[if !supportLists]-->ó <!--[endif]-->Less expensive
<!--[if !supportLists]-->ó <!--[endif]-->Used in School, College and small
Offices.
<!--[if !supportLists]-->vLap Top Computer
<!--[if !supportLists]-->ó <!--[endif]-->Small in a size
<!--[if !supportLists]-->ó <!--[endif]-->Working speed is better
<!--[if !supportLists]-->ó <!--[endif]-->Normally used by the Business man
and Travelling people.
History of Computer
<!--[if !supportLists]-->ó Abacus
<!--[if !supportLists]-->o
<!--[endif]-->13th Century
<!--[if !supportLists]-->o
<!--[endif]-->First made and used by China.
<!--[if !supportLists]-->o
<!--[endif]-->Used for Addition and Subtraction.
<!--[if !supportLists]-->o
<!--[endif]-->Chinese Abacus name was Saunpan.
<!--[if !supportLists]-->ó Analytical Engine
<!--[if !supportLists]-->o
<!--[endif]-->17th Century
<!--[if !supportLists]-->o
<!--[endif]-->Made by Charles Babbage
<!--[if !supportLists]-->o
<!--[endif]-->He is known as the Father of Modern Computer.
<!--[if !supportLists]-->o <!--[endif]-->He was a man who gave the idea of
First General purpose computer.
<!--[if !supportLists]-->ó Lady Ada Augusta
<!--[if !supportLists]-->o
<!--[endif]-->She was the Assistant of Charles Babbage in his work.
<!--[if !supportLists]-->o
<!--[endif]-->First lady Programmer of the world.
<!--[if !supportLists]-->o
<!--[endif]--> A Great Mathamatian.
Computer: Lecture no 1
CDC
COMPUTER DEVELOPMENT CONCEPT
<!--[if !supportLists]-->v
COMPUTER DEFINATION
Computer
is an Electronic Device which accept Data
from the User with the help of an Input devices then Store it, Process
it , Share it and Retrieves its result
onto an Output devices.
<!--[if !supportLists]-->v
<!--[endif]-->Block Diagram Of Computer
Input
Devices
|
|
Output
Devices
|
<!--[if !supportLists]-->1.
<!--[endif]-->RAM stands for Ran dam Access
Memory.
<!--[if !supportLists]-->2.
<!--[endif]-->CPU stands for Central Processing Unit
<!--[if !supportLists]-->v
<!--[endif]-->Input Devices
These Devices are used to enter
the Data in the Computer.
Exp:
Mouse, Keyboard, Joy Stick, Touch Screen, Mic, Scanner, Track ball ,
Light pen etc,
<!--[if !supportLists]-->v
<!--[endif]-->Output Devices
These
devices are used to received the Data from the Computer.
Exp:
Monitor, Printer , Plotter , Projector, Speaker etc.
<!--[if !supportLists]-->v
<!--[endif]-->Types
Of Computer
There are Two Main types of Computer.
<!--[if !supportLists]-->ó
<!--[endif]-->Dedicated Computer
They
are design for Special purpose.
They
can perform only one job at a time.
Exp:
Missile Control Machine etc
<!--[if !supportLists]-->ó
<!--[endif]-->Non Dedicated Computer
They
are design for General purpose.
They
can perform multiples jobs at a time.
Exp:
PC (Personal Computer)
<!--[if !supportLists]-->ó
<!--[endif]-->Basic
Types Of Computer
There are Three basic types of Computer.
<!--[if !supportLists]-->ó
<!--[endif]-->Digital Computer
<!--[if !supportLists]-->ó <!--[endif]-->Analog Computer
<!--[if !supportLists]-->ó
Hybrid Computer
<!--[if !supportLists]-->Ø
<!--[endif]-->Digital Computer
They
can perform mathematical calculation.
They
can accept data in the form of digits .
Exp:
+, - , *, /
<!--[if !supportLists]-->Ø
<!--[endif]-->Analog Computer
They
can Measure the physical Quantities.
Exp:
Temperature, pressure etc.
<!--[if !supportLists]-->Ø
Hybrid Computer
Word hybrid means Mixture or combination.
This
type of computer is the combination of Digital and Analog Computer.
Exp:
Petrol Pump, ECG
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