Meaning of ICT

Meaning of ICT

ICT is the technology required for information processing, in particular,

the use of electronic computers, communication devices and software applications to convert, store, protect,

process, transmit and retrieve information from anywhere, anytime.

EVOLUTION OF COMPUTERS

The early years

First generation computers ( 1940 - 1956)

Second generation computers ( 1956 - 1963)

Third generation computers ( 1964 - 1971)

Fourth generation computers ( 1971 - present)

Fifth generation computers ( present & beyond)

New era computers

THE EARLY YEARS

200 BCChinese Abacus

500 BCEgyptian Abacus

1620Napier’s Bones

1653Blaise Pascal

1673Leibniz’s

Rechner

1801Weiaring Rom

1823Mechanical Calculator

Machine

1941MARK 1

First Generation Computers ( 1940 - 1956)

Vacuum Tubes

MARK 1

UNIVAC ( 1951 )

Smaller than vacuum tubesNeeded no warm up timeConsumed less energyGenerated much less heatFaster and more reliableUse to transfer electronic

signal

Second generation computers ( 1956 - 1963)

TRANSISTOR

Third Generation Computers ( 1964 – 1971 )

IBM 370 series were

introduced in 1964

Silicone chips were manufactured at the Silicone Valley

Integrated circuit technology, which had reduced the size and cost.

Fourth Generation Computers (1970 - Present)It took only 55 years for the 4 generations to evolve

In 1971 Intel created the first microprocessor.

1976 built the first Apple computer

1981 IBM introduced its first personal computer.

Many types of computer models:

Apple Macintosh

IBM

DELL

ACER

Fifth generation computer ( Present & beyond )

New Hardware technology:

• Silicone chips• Processor• Robotics• Virtual reality• Intelligent systems• Programs which translate

languages.

New Era ComputersPersonal Computers Desktop

Mobile Computers Notebook PDAs Smart Phone

Midrange servers More powerful & larger than

workstation computer.Mainframes Large, expensive, very powerful

computer Bank, airlines and insurance

companySuper computers Fastest, most powerful, most

expensive Medicine, aerospace, automotive

design, online banking and others.

WHATWHAT

HAVE YOU HAVE YOU LEARN LEARN

TODAY?TODAY?