Useful for college students

1. COMPUTER GENERATIONS

4. 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

6. 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

8. 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

10. 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

12. 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

14. EARLY MECHANICAL COMPUTERS

16. Used to take US census

17. ELECTRO – MECHANICAL COMPUTERS

18. Used during WORLD WAR II to decrypt German codes

19. ELECTRONIC COMPUTERS

21. Used William Tube – type of RAM

22. THE FIRST COMMERCIAL COMPUTERS

25. MICROCHIP AND MICROPROCESSOR

27. PERSONAL COMPUTER

29. EARLY NOTEBOOKS AND LAPTOPS

32. RISE OF MOBILE COMPUTING

34. NETBOOKS