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THANK YOU - PowerPoint PPT Presentation


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OS, Ms-Office & Internet D. Kalidas Manager – Technical CSC Computer Education (P) Ltd Introduction To Computer What Is Computer ? It comes from the word “Compute” Difference Between A Computer & Calculator Father Of Computer Charles Babbage 1822 – Difference Engine

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slide1

OS, Ms-Office & Internet

D. Kalidas

Manager – Technical

CSC Computer Education (P) Ltd

slide2

Introduction To Computer

What Is Computer ?

It comes from the word “Compute”

Difference Between A Computer & Calculator

slide3

Father Of Computer

Charles Babbage

1822 – Difference Engine

1842 – Analytical Engine

slide4

Father Of Computer

1822 – Difference Engine

1842 – Analytical Engine

slide5

Characteristics of Computer

  • Speed
  • Accuracy
  • Diligence – Free from monotony, tiredness
  • Versatility
  • Storage Capacity
  • No I.Q
  • No Feeling
slide6

Computer Generation

  • First Generation (1942 – 1955)
  • Second Generation (1955 – 1964)
slide7

Computer Generation

  • 3) Third Generation (1964 – 1975)
  • 4) Fourth Generation – SSI (Small Scale Integration)
  • - LSI (Large Scale Integration)
  • 5) Fifth Generation – Artificial Intelligence
slide8

Classification of Computer

  • Digital Computers
  • Analog Computers
  • Hybrid Computers
slide11

Input Devices

1) Keyboard

slide12

Input Devices

2) Joystick

slide13

Input Devices

3) Light Pen

slide15

Input Devices

4) Touch Pad

slide16

Input Devices

5) MICR (Magnetic Ink Character Recognition)

slide17

Input Devices

6) Bar Coding

slide18

Input Devices

7) Scanner

slide19

Input Devices

8) Digital Camera

slide20

Output Devices

1) Monitor – CRT - LCD

slide21

Output Devices

2) Printers - Daisy Wheel Printer

- Line Printer

slide22

Output Devices

2) Printers - Dot Matrix Printer

slide23

Output Devices

2) Printers - Ink Jet Printer

slide24

Output Devices

2) Printers - Laser Printer

slide25

Storage Device

  • Primary Storage Device
    • ROM (Read Only Memory)
    • PROM (Programmabel ROM)
    • EPROM (Erasable PROM)
    • EEPROM (Electrically EPROM)
    • RAM
  • Secondary Storage Device
    • Floppy Disk (FDD)
    • Compact Disk (CD)
    • Hard Disk (HDD)

EPROM

RAM

slide26

Secondary Storage Device

  • Floppy Disk (FDD)
slide28

Secondary Storage Device

  • CD Drive / DVD Drive
slide29

Representing Characters In Memory

8 Bit - 1 Byte

1024 Bye - 1 Kilo Byte (KB)

1024 KB - 1 Mega Byte (MB)

1024 MB - 1 Giga Byte (GB)

1024 GB - 1 Tera Byte (TB)

slide30

Hardware & Software

Hardware – Physical Components of a computer

Software – Set of Programs Or instruction Written By The Users

slide33

Concept Of Operating System

  • Optimizes man-machine capabilities
  • Integrated system of programs
  • Supervises operations of CPU
  • Controls Input / Output
slide36

Computer Virus

Computer virus is a program that is loaded onto your computer without your knowledge and runs against your wishes

  • Activities of Computer Virus?
  • It perform some activities like deleting

files or disturbing your computer settings.

  • All computer viruses are man made.
  • A simple virus is dangerous because it will quickly use all available memory and bring the system to a halt.
slide38

Internet

Internet stands for Interconnected Network – Connected Through Telephone Wires.

The Internet, a network of networks, is popularly called the net.

slide39

History of Internet

1969 – ARPANET (Advanced Research Projects Agency Network)

1980 – NSFNET (National Science Foundation NET)

slide40

Requirement For Connecting To The Internet

  • Modem
  • Telephone Line
  • Subscription with Interest Service Provider (ISP)
  • Web Browser
slide41

Types of Modem

  • Internal Modem
  • External Modem
slide42

Web Browser

  • Software Application used to locate and display the web page
  • Netscape Navigator
  • Internet Explorer
  • Fire Fox
  • Mozilla
slide43

Web Page

A web page is a document on the Web. Web Pages can include text, pictures, sound and video.

slide44

Web Site

The website is a of one or more related web pages, linked together through a system of hyperlinking.

A website is similar to a magazine

slide45

Home Page

First Page of information when the website is typed

Typically contains introductory information about the website

slide46

Hyperlink

A hypertext document contains highlighted text that connects to other pages on the web.

When the mouse pointer moved over a hypertext or hiperlink the shape of the cursor changes to a hand sysbol

Example

slide47

URL

Uniform Resource Locator

Each web page has a unique address called URL

You can instantly display the webpage if we know the URL

Example

www.iteducationjobs.com

www.rediffmail.com

www.tn.nic.in

www.gmail.com

slide48

Search Engines

A search engine is a program that searches through a collection of web pages for particular information

Examples

www.altavista.com

www.altheweb.com

www.google.com

www.hobot.lycos.com

www.infoseek.com

slide49

Electronic Mail

Exchange electronic mail (e-mail) with people around the world.

E-Mail Address

[email protected]

Eg: [email protected]

[email protected]

[email protected]

[email protected]

slide50

Parts Of A Message

  • From
  • To
  • Subject
  • CC
  • BCC
  • Message
slide52

MS-OFFICE

  • MS-OFFICE
  • MS-Word
  • MS-Excel
  • MS-PowerPoint
  • MS-Outlook Express
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