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I used to think computer was the most boring thing in the whole universe.

I had no interest whatsoever in it and I discouraged most of my friends who wanted to know more about it.

Until recently when I realized that i had to become computer literate before getting a job in my dream firm.

“You’re not computer literate, no job” was the reply I got from the interviewer, even though my performance was exceptional.

I decided to do some research on computer and to my greatest surprise; I realized it was actually very interesting.

My interest in it spiked and I began to dig dipper from for information.

II wanted to help also people like me who wanted to know more about it and here are the information I got that helped me immensely.

Today, I’m one of the best computer programmers.Believe me; this information I’m going to be sharing with you will be more satisfying than eating candies.

Especially for beginners who wants to be perfect in computer operation and understanding.


For a beginner, knowing the basics is as important as the computer itself.These basic will be a foundation of knowledge for you.Before you start utilizing the programs in the computer system, you need to understand the system components and their usage. And now, I’ll be telling you about computer and I will also be talking about the generations of computer from very first to the present time.


I’m sure that is going to be the very first question we would be asking because that was the first question I had when I ventured into research.Most of our elementary school teachersmight have told us that ‘computer is any device that works on instruction’.

I’m sure that is going to be the very first question we would be asking because that was the first question I had when I ventured into research.Most of our elementary school teachersmight have told us that ‘computer is any device that works on instruction’. True. But that is a very scanty definition.The definition of computer varies according to the field of specialization.Computer has fields of specialization, therefore as simple as the word computer might have, it is very complex.Some of these areas of specialization are: computer networks, computer engineering, computer graphics, computer information systems, cognitive science, computer programming and Artificial intelligence.Each area has its own specific definition of computer.A computer is a set of unified and interactive components that uses electronic mechanisms to carry out a predefined process with accurateness. But the general definition of computer is the electronic devices, which is skillful in accepting data as an input, process data, store data and produce a result as output in human comprehensible way. Computer is divided into four major parts namely;the monitor, System unit, Mouse and keyboards.


Computer can be traced to the founders of computer.Charles Babbage is said to be the father of computer because the history and development of computer could be traced down to him.While Lady Ada Lovelace was called the mother of programming because she did all the programming works on the computers.In fact both were the pioneers of computer.Computer wasn’t as perfect then as it is now, when it was invented, it was far cry from what we have now just because it has passed through someseries of developments and phases.There are five generations of computers which I will be explaining vividly below.

Vacuum tube technology

Transistor technology

Integrated circuit technology

The VLCIS Micro technology

And Era of Artificial intelligence

First Generation Computer also known as the Vacuum Tube Technology These first generations of computer are computers that were developed around 1944 and 1959.EDSAC- Electronic Delay Storage Automatic ComputersENIAC- Electronic Numerical Integrator and Calculator andUNIVAC 1-11.These were the first generation of computers.They were very heavy, and they produced a lot of heat, in fact some of them weighed up to 300 tons.Because of the heat they were consuming and producing, a special cooling system was provided for them.

The use of Vacuum tube as the elementary building blocks for the logic parts of the computers was the obvious technology of this generation.Even though they were considered to be good as at the time it was invented it was very slow compared to the ones we have now.

People were able to know that after seeing the subsequent invention of the next generation.The Transistor Technology which is the second generation.These set of computers had its own unique characteristics which made it a little bit different from the first generation.

It was invented and developed in the year 1948 in Bell Telephone Laboratories and it was usedall over the electronic world.The computers were not introduced to the public until 1959.These heavy and slow vacuum tubes were replaced by the transistor.

The computers could do more than the first generation was doing and they were very reliable.They didn’t require the use of so much power and unlike the first generation, they produced less heat, they were smaller compared to the heavy vacuums and above all, the cost of producing them was relatively low.

Examples of these computers areIBM 7030, 7070, 7090, 7094, Boroughs 200 series, UNIVAC III, Honey-well 800 etc. FORTRAN and COBOL which was a better and higher development of programming languages was another innovation conveyed by the second-

generation computers which were 10 times faster than the first.Third Generation Computers (Integrated Circuit Technology) These set of computers were produced in the year 1964 and 1971.

It was the technology of integrated circuits that paved way for the third generation computers. The achievements of the Integrated circuit technology led to even faster, more reliable, cheap and small-sized computers, whose powers were multiple of those of the earlier generations,. Then, they paved way also for mini computers, whose power of operation was stronger and reliable than the earlier generationEven though it was greater and reliable when it comes to speed, the cost of producing it was lesser than the previous generations. They could do as many calculations per second. These computers were called; IBM 31360 - 31370 series, CDC 6600, 7600, Boroughs B5000 and PDP II series.

The Fourth Generation Computers (VLSIC Micro Technology These generations of computers were also produced in the year 1971-1982.This generation provided micro-computers that could do the very same thing the first generation could do. They were very fast and as well cheap in making it,it was easier for an individual to purchase.

This generation also produced varieties of software packages like graphics, word processing, games, database management and spreadsheet packages.They made people’s job way easier.Examples of the fourth generation computers include the IBM 3033, HP 3000 mini computers, Apple II, Boroughs B7700.Fifth Generation Computers (Era of Artificial Intelligence) the unique attributes of this generation are their incredible speed and power. They are way better than the past generations.The perfect example of the fifth generation is our present day computers.Comparing them with the past generations I’ve mentioned and explained earlier, you’ll notice that they are the best set of computers we have now.Each generation is an improvement of the previous.


I’m sure that as a beginner, you already know more about computers than some computer literate.Believe me when I say computer is an interesting area to specialize in.It gives us more access to the whole world.