generations of computer

24

Upload: a-abdul

Post on 07-Jul-2015

59 views

Category:

Science


1 download

DESCRIPTION

very easy presentation

TRANSCRIPT

Page 1: generations of computer
Page 2: generations of computer
Page 3: generations of computer
Page 4: generations of computer

I Generation : 1945 – 55 II Generation : 1955 – 65 III Generation : 1965 – 75 IV Generation : 1975 – 89 V Generation : 1989 to present

Page 5: generations of computer

First Generation•The period of first generation was 1946-1959.

•First generation of computers started with using vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit).

•There were machine codes and electric wired board languages used

Page 6: generations of computer
Page 7: generations of computer

Second generation of computer•Transistors replaced vacuum tubes and ushered in the second generation of computers.

•Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube.

•Second-generation computers still relied on punched cards for input and printouts for output

Page 8: generations of computer
Page 9: generations of computer

Third generation of computer•The period of third generation was 1965-1971.

•In this generation, Remote processing, Time-sharing, Real-time, Multi-programming Operating System were used.

•High-level language (FORTRAN-II TO IV, COBOL, PASCAL PL/1, BASIC, ALGOL-68, etc.) were used during this generation.

Page 10: generations of computer
Page 11: generations of computer

• IC used

• More reliable and Faster

• Smaller size

• Generate less heat

• Lesser maintenance

• Still costly

• A.C. needed

• Consumed lesser electricity

• Support high-level language

Page 12: generations of computer

Fourth generation of computer• VLSI technology used• Very cheap• Portable and reliable• Use of PC's• Very small size• Pipeline processing• No A.C. needed• Concept of internet was introduced• Great developments in the fields of

networks• Computers became easily available

Page 13: generations of computer
Page 14: generations of computer

• The period of Fourth Generation was 1971-1980.

• In this generation, Time sharing, Real time, Networks, Distributed Operating System were used.

• All the higher level languages like C and C++, DBASE, etc., were used in this generation.

Page 15: generations of computer

Fifth generation of computer• The period of Fifth Generation is 1980-

till date.

• This generation is based on parallel processing hardware and AI (Artificial Intelligence) software.

• AI is an emerging branch in computer science which interprets means and methods of making computers think like human beings.

Page 16: generations of computer
Page 17: generations of computer

• All the higher level languages like C and C++, Java, .NET, etc., are used in this generation.

• AI includes:

• Robotics

• Neural networks

• Game Playing

• Development of expert systems to make decisions in real life situations.

• Natural language understanding and generations.

Page 18: generations of computer
Page 19: generations of computer
Page 20: generations of computer
Page 21: generations of computer

Next Generation Optical DiskThe following formats go beyond the current third-generation discs and have the potential to hold more than one terabyte (1TB) of data:

• Holographic Versatile Disc (3.9TB=850 DVDs)• LS-R • Protein-coated disc

Page 22: generations of computer

• The Holographic Versatile Disc (HVD) is an optical disc technology still in the research stage which would hold up to 3.9

terabytes (TB) of information which is equivalent to around 850 DVDs.• It was introduced in 2004.

Holographic Versatile Disc

Page 23: generations of computer
Page 24: generations of computer

Presenter Abdul HameedIX-O