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Computer
GenerationsMd. RaseduzzamanMd. Monirll AwalGolam MostofaRifat Hasan HridoyFoysal Ahmed
Introduction
Md. Raseduzzaman
Generation in computer terminology is a
change in technology a computer is/was being used. Initially, the generation term was used to distinguish between varying hardware technologies.
What is computer generation?
Generation of Computer
Frist Generation Computers
Second generation computers
Third generation computers
Fourth Generation Computers
Fifth Generation Computers
Frist Generation
Computers
UNIVAC, EDVAC, EDSAC and ENIAC computers are examples of first generation computing devices.
CHARACTERISTICS:1) First generation computers were based on vacuum tubes.2) The operating systems of the first generation computers were very slow.3) They were very large in size.4) Production of the heat was in large amount in first generation computers.5) Machine language was used for programming.6) First generation computers were unreliable.7) They were difficult to program and use.
Ipmortant parts
The Vacuum Tube(1942-1954)
Md: Foysal Ahmed ID : 161-15-7492
Second Generation Computers
Second Geeneration of Computer (1955-1964)
Important part
A vacuum tube
IC chip
Third Generation Computers
Md. Monirll Awal
Third Generation
Computers
(1964-1971)
Third Generation
ComputersEmployed during the period 1964-1975. Integrated circuit (ICs) began to be used. These ICs were called chips.Some of the computers developed during this period were: IBM-360- developed by IBM in
1964. PDP-8 -developed by DEC in
1965. PDP-11 -developed by DEC in
1970. VAX- developed by DEC in 1978.
Advantages
Fastest computing devices. Very productive. Easily transportable from one
place to another because of their small size.
Use high-level languages. Could be installed very easily
and required less space.
Fourth Generation Computers
Md. Refat Hassan Hredoy
Fourth Generation
Computers
(1971-1989)
Computer-Fourth
Generation The period of fourth generation was 1971-
1989. The computers of fourth generation used Very Large Scale Integrated (VLSI) circuits. VLSI circuits having about 5000 transistors and other circuit elements and their associated circuits on a single chip made it possible to have microcomputers of fourth generation. Fourth generation computers became more powerful, compact, reliable, and affordable. As a result, it gave rise to personal computer (PC) revolution.
The main features of fourth
generation are:-
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
Advantages of Fourth
Generation1. Smaller in size and much reliable.2. No cooling system required in many cases.3. Much faster computation.4. Portable and cheap.5. The heat generated was negligible.6. Totally general purpose computer.
Disadvantages of Fourth
Generation1. Latest technology was required for
manufacturing of microprocessors.
Some computers of this
generation were:
1. DEC 102. STAR 10003. PDP 114. CRAY-1(Super Computer)5. CRAY-X-MP(Super Computer)
Fifth Generation Computers
Golam Mostofa Imran
Fifth generation
computers
(1989 - present)
ICs with ULSI technology Larger capacity main memory hard disks with
RAID support Optical disks as portable read-only storage
media Notebooks powerful desktop PCs and
workstations Powerful servers supercomputers Internet Cluster computing
Key hardware technologies
Micro-kernel based multithreading
distributed OS Parallel programming libraries like MPI &
PVM JAVA World Wide Web Multimedia Internet applications More complex supercomputing applications
Key software technologies
Portable computers Powerful, cheaper reliable, and easier to
use desktop machines Powerful supercomputers High uptime due to hot-pluggable
components Totally general purpose machines Easier to produce commercially easier to
upgrade Rapid software development possible
Key characteristics
1. IBM notebooks2. Pentium PCs3. SUN4. Workstations5. IBM SP/26. SGI Origin 20007. PARAM 10000
Some rep systems
Thank you