Computer generations powerpoint slide

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

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