intro new 2

8/2/2019 intro new 2

1/73

An electronic device, operating under the control of instructions

stored in its own memory unit, that can accept data (input),

manipulate the data according to specified rules (process), produceinformation (output) from the processing, and store the results for

future use.


2/73

Speed

Storage

High Accuracy

Versatility

Automatic Operation

Obedience

ADVANTAGES


3/73

DIFFERENT TYPES OF COMPUTER

HYBRIDDIGITALANALOG

COMPUTER

SUPER MICRO MAIN FRAME MINI

PCHOME


4/73

Analog computer measures and answer the questions by themethod of HOW MUCH. The input data is not a number infect a

physical quantity like tem, pressure, speed, velocity.Signals are continuous of (0 to 10 V)Accuracy 1% ApproximatelyHigh speedOutput is continuous

ANALOG

Digital computer counts and answer the questions by the method of "HOW

Many. The input data is represented by a number. These are used for the

logical and arithmetic operations.

Signals are two level of (0 V or 5 V)

Accuracy unlimited

low speed sequential as well as parallel processing

Output is continuous but obtain when computation is completed

DIGITAL

The hybrid computers have best features of both analog and digital

computers. These computers contain both the digital and analog

components. In hybrid computers, the users can process both the

continuous (analog) and discrete (digital) data

HYBRID


5/73

Micro computer are the smallest computer system. There size range

from calculator to desktop size. Its CPU is microprocessor. It also

known as Grand child Computer.

Application : - personal computer, Multi user system, offices.

MICRO

These are also small general purpose system. They are generally

more powerful and most useful as compared to micro computer.

Mini computer are also known as mid range computer or Child

computer.

Application :- Departmental systems, Network Servers, work group

system.

MINI

Mainframe computers are those computers that offer faster

processing and grater storage area. The word main frame comes

from the metal frames. It is also known as Father computer.

Application Host computer, Central data base server.

MAIN FRAME


6/73

Super computer are those computer which are designed for scientific

job like whether forecasting and artificial intelligence etc. They are

fastest and expensive. A super computer contains a number of CPU

which operate in parallel to make it faster. It also known as grand father

computer.

Application whether forecasting, weapons research and

development.

SUPER

MINI COMPUTER SUPER COMPUTER


7/73

CLASSIFICATION ACCORDING TO PURPOSE

GENERAL PURPOSE

General purpose computers are designed to

solve a large variety of problems. The different

programs can be used to solve many problems.

Most digital computers are general purpose

computers and used in business and

commercial data processing .

SPECIAL PURPOSE

The special purpose computers are designed to

solve specific problems. The computer

program for solving a specific problem is built

right into the computer. Most analog

computers are special purpose computers.

These special purpose computers are widely

used in industrial robotics.


8/73

ANATOMY OF COMPUTER

HARDWARE All the physical parts which makes up a computer systemcalled hardware i.e. all the devices or peripherals whichperforms the data processing operations.

Eg: 1. Input devices

2. Output devices

SOFTWARE

Software consists of programs and routines whose purpose is

to make the computer useable for the user. These software

normally supplied by computer manufacturers or softwaremanufacturers

Eg: 1. Windows

2. Paint


9/73

SOFTWARE

APPLICATIONSYSTEM

Eg: Operating System Eg: MS Word

SOFTWARE TYPES


10/73

Types of systems software

Operating systems

Utility programs

System Software

Controls operations of computer hardware and

Supports application programs problem-solving

capabilities

Helps users solve particular problems. In most cases,

application software resides on the computers hard

disk. Application software can also be stored on CDs,

DVDs, and flash or keychain storage devices

Types of application software

Word processor

Spreadsheet

Application Software


11/73

Development Tools

Special Applications

Hardware

Operating System

Graphics User Interface

Database Management

Software

Databases

Games


12/73


13/73


14/73


15/73


16/73


17/73


18/73


19/73


20/73


21/73


22/73


23/73


24/73


25/73


26/73


27/73


28/73


29/73


30/73


31/73


32/73


33/73


34/73


35/73


36/73


37/73


38/73


39/73


40/73


41/73


42/73


43/73


44/73


45/73


46/73


47/73


48/73


49/73


50/73


51/73


52/73


53/73


54/73


55/73


56/73


57/73


58/73


59/73


60/73


61/73


62/73


63/73


64/73


65/73


66/73


67/73


68/73


69/73


70/73


71/73


72/73


73/73

intro new 2

Documents

Transcript of intro new 2