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Tuesday, 9 May 2017

Generations of Computer : Computer History Important MCQs and Notes

Generations of Computer : Computer History Important MCQs and Notes
Computer Awareness for IBPS/SBI/RRB PO & Clerks Class Notes

The initial period of the computer was not such that it used to be very big, heavy and debased in the beginning. There was a lot of change in the technique of time, these changes started to create new generations of computers, after every generation, the size, type of functioning and functioning of the computer went into improvement, then go today become the computer Found.

Hi expert in this article 'GENERATIONS OF COMPUTERS : IBPS Bank Exam Study Notes' is important scoring part. The Computer devices are really made cheaper in rate, smaller in size, more powerful in consumption and more efficient in functioning due to the random technical development and change of basic computer operations. Computer General Knowledge of Five generations of computers is also essential to attempt online Aptitude Test in Computer knowledge. Vacuum Tubes in first generation were replaced by Transistors of second generation. 

These transistors were replaced by third generation Integrated Circuits. Fourth Generation Microprocessors replaced these Integrated Circuits and the present Fifth generation Artificial Intelligence dominated these Microprocessors. Hence the latest Computer knowledge is required to update your performance in Online Aptitude Tests. The details of all five generations of computers are furnished here to have a quick glance while attempting Online Aptitude Test in Computer Knowledge and Awareness for IBPS Bank Exam.

Important Downloads- 

  1. Computer Quizzes
  2. Computer Study Notes


Sl.
No.
Description
COMPUTER GENERATIONS
FIRST
SECOND
THIRD
FOURTH
FIFTH
1
Period
1946-1959
1959-1965
1965-1971
1971-1980
1980 onwards
2
Memory
Magnetic Drum
Magnetic Core
Micro Chip
Semi
Conductor
Semi
Conductor
3
Components used
Vacuum
Tubes
Transistors
Integrated
Circuits (ICs)
VLSI Micro Processor
ULSI Micro Processor
4
Languages
Machine
COBOL, FORTRAN
FORTRAN, PASCAL, ALGOL, BASIC, COBOL
C, C++, Dbase
Artificial intelligence
5
Examples
ENIAC, EDVAC, EDSAC, UNIVAC, IBM-701,
IBM – 650

IBM 1620, IBM 1401, CDC 3600IBM 370, UNIVAC 1108, UNIVAC AC 9000
Apple Macintosh, IBM PC
Desktops, Laptop, Notebook


FIRST GENERATION Computers: (Vaccum Tubes)

In First Generation of computers, Vaccum tubes were used to store data in the form of propagating sound waves.

Memory: Magnetic Core is used as memory
Storage Place: Punch Cards   
Language Used: Machine Level
ADVANTAGES:
Calculates the data in milliseconds
DISADVANTAGES
  • High power consumption
  • Large Size with less storage capacity
  • Generates heat very soon because of more number of vaccum tubes
  • Slow processing
  • Non-Portable
Some of the computers from first generation are ENIAC, EDVAC, EDSAC, UNIVAC, IBM – 701, IBM – 650

SECOND GENERATION Computers(Transistors)

In second generation of computers, vaccum tubes are replaced with transistors
Memory: Magnetic Cores
Storage Place: Magnetic Tape
Languages Used:  FORTRON, COBOL
ADVANTAGES:
  • Small in size (By replacing vaccum tubes with transistors)
  • Calculates data in micro seconds
  • Portability
  • Reliability compared to first
  • Required Less Energy
  • Less Power Consumption
DISADVANTAGES:
  • High Cost
  • Punch cards are used
Some of second generation computers are IBM 1620, IBM 1401, CDC 3600

THIRD GENERATION Computers (Integrated Circuits)

  •    In this generation, Integrated Circuits are placed containing transistors, capacitors, resistors. 
  •    Microprogramming, Parallel Processing, Multiprogramming, time sharing was introduced in this generation
Memory: Microchip
Languages used: FORTRAN, PASCAL, ALGOL, BASIC, COBOL
ADVANTAGES:
  • Smaller in Size
  • Better Speed
  • Low Cost
  • Input devices like Mouse and Keyboards are used
DISADVANTAGES:
  • Air Conditioner is required
  • Some of third generation computers are IBM 370, UNIVAC 1108, and UNIVAC AC 9000

FOURTH GENERATION Computers (VLSI Microprocessor)

In this generation VLSI Very Large Scale Integration were designed which reduces the size of the computer. It consists of millions of integrated circuits in it.
Graphical User Interface (GUI), LAN, WAN was introduced in this generation
Languages Used: C, C++, Dbase
ADVANTAGES:
  • Low Cost
  • VLSI Technology
  • Internet Technology
  • Pipelining Process
DISADVANTAGES:    
  • Latest Technology is required for manufacturing Microprocessors
  • Some of the fourth generation computers are Apple Macintosh and IBM PC

FIFTH GENERATION Computers (ULSI Microprocessor)

In this generation Artificial Intelligence technology is used. This computers work like a human behavior. Scientists are working still on this stage. Computers of this generation will think like a human brain.
ADVANTAGES:
  • World Wide Web is introduced with some of applications like Email
  • Notebook Computers were introduced
  • New Operating Systems like Windows 95/98/XP and Linux are introduced
  • Some of the fifth generation computers are Desktops, Laptop, Notebook
Thanks for studying
All the very BEST
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