4th generation of computer

Computer Generation in depth

1. Computer Generation
Presented by :Mahrukh Shehzadi

2. Fourth Generation(1971-1991)
•“Its fine to celebrate success,butit is
important to heed the lesson of failure.”
Bill Gates, Co-founder of MICROSOFT
Invention:
The microprocessor was first
introduced in 1971 by INTEL, invented by
their employee Ted Hoff..

3. •They named it the Intel-4004 , the first
computer on a chip. These chips made it
possible for computer to fit on desktop.

4. Introduction
•The idea of computer technology took a big turn
with the invention of microprocessor and VLSI
technology(Very Large Scale Integration)
•ALTAIR 8800, the first personal computer
•MITS ALTAIR 8800 is credited as one of the first
microcomputer. It was produced in 1975 by Micro
Instrumentation Telemetry Systems labeled as a
personal computer, PC. Ed Roberts, the head of
MITS, designed it using a Intel 8080 CPU chips
(first 16 bit microprocessor) and a sleek metal
case.

5. •Once a monitor and keyboard were sold with it,
the sales increased greatly. It was the initial
influence of personal computing in the world. You
could run BASIC language on it , written by Bill
Gates and Paul Allen sold as “Altair BASIC” which
became their company’s Microsoft first product.
The computer sold very well for an amount of
time, but then MITS was sold to a company called
Pertecin 1976. the ALTAIR seemed to disappear
into history.

6. Apple Computers
Steve Woznickfirst developed the original Apple
computer Apple I, in 1976. It was Apples’s
first product , a small PC.

7. Characteristics of Fourth Generation
Computer
•The fourth generation computers have
microprocessor based systems. It uses
VLSI(very large scale integrated ) circuits.
•They are the cheapest among all the
computer generation.

8. •The speed, accuracy and reliability of the
computers were improved in fourth generation
computers.
•Many high level languages were developed in the
fourth generation such as COBOL,FORTRAN
,BASIC,PASCAL and C language.

9. •A further refinement of input/output devices
was developed.
•Portable and cheaper than the older versions.
•The heat generation was negligible.
•Smaller in size and much reliable than other
generations of computer.

10. Disadvantages
•The very advanced technology was required to
fabricate to the Ics(Integrated Circuits).
•High quality and reliable system or technology
can only make the Ics.
•Cooler is required(fan)
•The latest technology is required for the
manufacturing of Microprocessors.

11. Language
•Many high level languages were developed in
the fourth generation such as COBOL,
FORTRAN, BASIC,PASCAL and C language .
•A further refinement of input/output devices
was developed. IBM 4341, DEC 10, STAR 1000,
PUP 11 and APPLE II are the examples of
fourth generation computers.

12. Examples
•Some computer of the fourth generation
include:
ALTAIR 8800
APPLE I
APPLE II Series
Macintosh
IBM PC

13. ANY QUESTION

14. No Question Please