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. But nowadays, generation includes both hardware and software, which together make up an entire computer system.
Computers can be classified into five types according to the generations i.e. time period:
First Generation Computers: vacuum tubes
Second Generation Computers: transistors
Third Generation Computers: integrated circuits (ICs)
Fourth Generation Computers: large scale integration (LSI)
Fifth Generation Computers: very large scale integration (VLSI)
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. But nowadays, generation includes both hardware and software, which together make up an entire computer system.
Computers can be classified into five types according to the generations i.e. time period:
First Generation Computers: vacuum tubes
Second Generation Computers: transistors
Third Generation Computers: integrated circuits (ICs)
Fourth Generation Computers: large scale integration (LSI)
Fifth Generation Computers: very large scale integration (VLSI)
These Notes from the class of BS EDUCATION 1st Semester (Spring) Session 2023-2027 Teacher :Ch Naveed Afzal
semester started in march 2023 and end in july 2023
Computer has become a part of our life. Today along with calculations, their work area is very wide-supermarket scanners scan and calculate our grocery bill and also keep store inventory, automatic teller machines(ATM) helps us in banking transaction how the technology has developed and what its future course is To understand this first we should know about the different generations of computers.
The First electronic computer was designed and built at the university of pennsylvania based on vaccum tube technology. Vaccum tubes were used to perform logic operations and to store data. Generations of computers has been divided into five according to the development of technologies used to fabricate the processors, memories and I/O units.
The History of computer development is often referred to in reference to the different generations of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operates, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices.
Generation in computer terminology is a change in technology
With each new generation, the circuitry has gotten smaller and more advanced than the previous generation
generations of computer, first generation, second generation, third generation, fourth generation, fifth generation, advantages, disadvantages, examples
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
2. COMPUTER GENERATION
Computer has become a part of our life. Today along with
calculations, their work area is very wide-supermarket scaneners scan
and calculate our grocery bill and also keep store inventory, automatic
teller machines (atms) help us in banking transaction.
How the technology has developed and what its future course is. To
understand this first we should know about the different generation of
computers.
3. FIRST-GENERATION COMPUTER
(1945-1956)
First-generation computers used vacuum tubes and values as their
basic electronic component. They were extremely large in size and
reliable. The language used for storing and processing data was
machine language.
Some of the first-generation computers are:
ENIAC (electronic numerical integrator and calculator) – it was built in
1946 at the university of PENNSYLVANIA, U S A by JOHN ECKERT
and JOHN MAUCHLY.
EDVAC (electronic discrete variable automatic computer) – developed
in 1950
EDSAC (electronic delay storage automatic computer) – it was
developed by MV WILIKES at Cambridge University in 1949
Univac-I - The Universal Automatic Computer was USA’S first
commercially available computer system. It was delivered in 1951 by
the ECKERT-MAUCHLY computer corp.
4. DISADVANTAGE
The disadvantages of the first-generation computers are:
1. They were too bulky.
2. They emitted large amounts of heat because they used lots of vacuum tubes
3. AIR conditioning was required.
4. They were prone to frequent failure that’s why they were unreliable.
5. They were not portable.
5. SECOND-GENERATION COMPUTERS
(1956-1963)
In the generation of computers, transistors were used in place of
vacuum tubes.
Transistors are more compact than vacuum tubes as they are made up
of semiconductors. They are also more durable than vacuum tubes.
Programming languages some of the computers of the second
generation are:
IBM 1620 –
Its size was used smaller as compared to the first-generation computers
and it was used mostly for scientific purpose.
IBM 1401-
IT was used for was business application.
CDC 3600-
IT was used for scientific purpose.
6. ADVANTAGES
The advantages that the second-generation computers had over the
generation computers are:
They were smaller as compared to first-generation computers.
They generated less heat.
They took comparatively less computers time.
They were less prone to failure.
DISADVANTAGES
The disadvantages that second generation computer had over the first
generation commuter are:
They required Air Conditioning.
Frequent maintenance was required.
They were difficult and quite expensive
7. THIRD GENERATION COMPUTER
(1964 – 1971)
In the third generation of computers integrated circuits (ICs) began to
be used. These ICs were called chips.
These ICs are more compact than a transistor. Single ICs has many
transistors, registers and capacitors, placed on a single thin of silicon.
So the computer built of such components became smaller.
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.
CRA 1 - Developed by CRAY research in 1974.
VAX - Developed by DEC 1978.
8. HIGHT-LEVEL language such as BASIC (Beginners all-purpose symbolic
instruction code) were developed during this period.
ADVANTAGES
THE advantages that the third-generated computers had over the second-
generation computers were:
1.They were smaller in size as compared to the second-generation computers.
2. They generated less heat.
3. They reduced computational time.
4. They involved low maintenance cost.
5. They were easily portable.
6. They were comparatively cheaper.
9. Fourth-generation computers used very large integration (VLSI)
technology. After the induction of integrated circuits, computers could
only get small in size, since hundreds of computers could fit onto one
chip. By the 1890s, the use of VLSI technology had squeezed hundreds
of thousands of computers onto a single chip. Ultra-large scale
integration (ULSI) increased that number to millions. This also helped
decrease the price of computers are IBM-PC, Apple macintosh, sun
SPARC station etc.
FOURTH GENERATION COMPUTER
(1971 ONWARDS)
10. ADVANTAGES
THEY ADVANTAGES OF FOURTH GENERATION COMPUTERS
OVER THIRD-GENERATION COMPUTERS ARE:
They were cheaper.
They had a larger memory and high functional speed.
They consumed less power.
They generated a negligible amount of heat.
11. Is classified as fourth generation computers.
faster, more powerful, tremendous data storage and processing
capacity
New brands and models would come out the market almost every other
month.
Many clones or imitations of the IBM have become even more powerful
and a lot cheaper.
Computers became more affordable
Computers can now be found in homes, schools, offices etc.
There has been a tremendous improvement in software technology
Different software applications to choose from: word processing,
spreadsheets, database management, games and entertainment.
Computer subjects are now being offered not just to college students
but even to high school and elementary.
Computers are now used as an aid in teaching math, science etc.
TODAY’S COMPUTER