EVOLUTION OF COMPUTERSCOMPUTER GENERATIONS

FIRST GENERATION (MID 1940’S)

FIRST GENERATION (MID 1940’S) Vacuum tubes were used as electronic

components Machine language was used (0/1) Input was given through punch cards,

paper tapes and result in the form of printouts

As big as a room in size Cost was very high

SECOND GENERATION (1956)

SECOND GENERATION (1956) Vacuum tubes were replaced by

transistors Size of transistors smaller than vacuum

tubes Assembly language was used Consumed less power, faster and

reliable Size and price were reduced

THIRD GENERATION (1964)

THIRD GENERATION (1964) Integrated circuits (IC’s) made up of

small crystal of silicon were used Structured programming language – C

and COBOL Increased speed and efficiency Input – keyboard and output – monitor Decrease is size, power consumption,

heat generation and cost

FOURTH GENERATION (1971 AND PRESENT)

FOURTH GENERATION (1971 AND PRESENT) Microprocessor chips were used- made

up of thousands of IC on a single chip Object oriented programming language

and domain specific language – C++, SQL (database)

High processing speed, high reliability and low power consumption

Decrease in size and cost

FIFTH GENERATION(PRESENT AND FUTURE)

FIFTH GENERATION(PRESENT AND FUTURE) Computers dealing with Artificial

Intelligence (AI), expert systems and robotics

Still in development phase Main goal is to respond to natural

language Use of quantum, molecular and nano

technology

EVOLUTION OF COMPUTERS

MID 1800S – 1930S

EARLY MECHANICAL COMPUTERS

DIFFERENCE ENGINE- CHARLES BABBAGE

Z1 (1890)

Used to take US census

1930S

ELECTRO – MECHANICAL COMPUTERS

Z3

Used during WORLD WAR II to decrypt German codes

1940S

ELECTRONIC COMPUTERS

COLOSSUS

THE BABY

Used William Tube – type of RAM

1950S

THE FIRST COMMERCIAL COMPUTERS

UNIVAC

IBM 650

1960S

MICROCHIP AND MICROPROCESSOR

MICROCHIP

1970S

PERSONAL COMPUTER

COMMODORE PET

1980S – 1990S

EARLY NOTEBOOKS AND LAPTOPS

OSBORNE 1

GAVILAN SC

2000S

RISE OF MOBILE COMPUTING

DROID

LATE 2000S

NETBOOKS

ASUS EEE PC 700