Generations of Computer

Generations of Computer

In the 20th century, electricity was invented so computers began using electric power this led to the rapid development of computers. let’s discourse how the modern PC changed generation after generation the computers that were developed from 1942 to 1955 were called the first generation computers.

First Generation Computer (1946-1959)

The first-generation computers castoff vacuum tubes, a vacuum tube contains of a glass bulb and wire. the cable is cast-off to transmit data in the form of electronic signals. The first generation of computers was very large expensive and required huge amount of electricity. The ENIAC or the electronic arithmetical integrator and calculator was a first-generation computer.

Followings were the real disadvantages of 1st Generation PCs:

1. They were very cumbersome.

2. The working rate was very moderate.

3. Power utilization was exceptionally high.

4. It required enormous space for establishment.

5. They had no working framework.

6. The programming capacity was very low.


Second Generation Computer (1959-1965)

The 2nd-generation computers were developing between 1956 and 1964. now what is the alteration among the first and second-generation computers the second-generation computers used transistors instead of vacuum tubes as transistors are smaller than vacuum tubes? The computers converted abundant smaller in size they also became faster and cheaper.

The remarkable highlights of this age were:

1. Generally quicker than the 1st Generation PCs.

2. Smaller than the 1st Generation PCs

3. Created a lower level of warmth

4. Increasingly dependable

5. The higher limit of inward stockpiling


Third Generation Computer (1965-1975)

 1965 to 1975 was the retro of the third-generation computers. Combined circuits were presented during the growth of the third-generation computers an integrated circuit or IC is as small as a transistor but it can work as fast as thousands of them. combined circuits finished computers faster cheaper and smaller than the second-generation computers. They used less electricity and made fewer mistakes.

The constructions of computers going to this generation were:

Utilized little ICS

Comparatively precise small in size

Prepared usage of operating system

High processing speed

More consistent

Power effective and high speed

Use of high-level languages

Enormous memory

Small cost


Fourth Generation Computer (1975-1989)

The computers developing since 1975 up to the present-day are called the fourth-generation computers. The4th generation computer uses microprocessors. A microprocessor contains a small silicon chip on which thousands of circuits are sited. The fourth-generation computers are minor portable and inexpensive they use less electricity and produce less heat.

The prominent features of this group were:

So fast

Very small temperature generation

Tiny in size

Very consistent

Insignificant hardware failure

Highly classy


Fifth Generation Computer (1989 to till date)

Computers that are currently being researched and developed on the fifth generation computers these computers are the most advanced computers scientists are now trying to develop fifth generation computers.

 In a move that they can ponder on their own, this is termed artificial intelligence. Robots work on this technology now tries to answer this question which of the following terms is associated with the development of fifth-generation computers.

Click the correct option that’s right scientists are trying to develop artificial intelligence with the fifth-generation computers. Computers are finished in different sizes so that dissimilar people can use them for different purposes.

The notable highlights of this age are:

PCs dependent on man-made reasoning are accessible

PCs utilize broad parallel handling, different pipelines, numerous processors and so forth

Enormous parallel machines and widely disseminated framework associated by correspondence systems fall in this classification.

Presented ULSI (Ultra Large-Scale Integration) innovation – Intel’s Pentium 4 microchip contains 55 million transistors a large number of segments on a solitary IC chip.

Superscalar processors, Vector processors, SIMD processors, 32 pieces miniaturized scale controllers and installed processors, Digital Signal Processors (DSP) and so on have been created.

Memory chips up to 1 GB, hard circle drives up to 30 GB and optical plates up to 27 GB are accessible (still the limit is expanding)

Item situated language like JAVA reasonable for web programming has been created.

Versatile scratch pad PCs presented

Capacity innovation progressed – huge primary memory and plate stockpiling accessible

Presented the World Wide Web. (What’s more, other existing applications like email, web-based business, Virtual libraries/Classrooms, interactive media applications and so on.)

New working frameworks created – Windows 95/98/XP/… Windows7,  LINUX, and so on.

Got hot-pluggable highlights – which empower a bombed part to be supplanted with another one without the need to shut down the framework, enabling the uptime of the framework to be exceptionally high.

The ongoing improvement in the use of the web is the Grid innovation which is still in its up and coming stage.

Quantum instrument and nanotechnology will drastically change the period of PCs.



Let us discuss them supercomputers are the most complex computers. Supercomputers are used by people who need to process complex and large amounts of data supercomputers are used to solve complex numerical problems make forecasts and analyze scientific or engineering problems.

Mainframe computers are huge and lavish they have powerful processors and very big memories. Hundreds of persons can work on a mainframe computer at the same time. Many computers are smaller and cheaper than mainframe computers and have less processing power. Many computers can process large amounts of data unlike mainframe computers fewer people can work on a mini-computer.  Microcomputers are the most common computers they are used by businesses at schools and at homes only.

One person can use them at a time they are also called desktop computers or personal computers. Laptop computers are smaller but costlier than desktop computers they are also called notebooks they can be operated with a battery and as they are portable they are mostly used while traveling.

Mobile devices and tablets are smaller than laptop computers. Tablets are used to organize information play games and read e-books look at the image. It shows an embedded computer embedded. Computer is a microprocessor that is fitted into a device to control its operation embedded computers are installed in smart appliances and automobiles to perform special operations.


Leave a Reply