Lecture #1 Introduction to Computer and Short History of Computer

Introduction to Computer Short History of Computer

Analytical Engine:

An introduction to Computer and Short History of Computer In 1833, Charles Babbage ( the Very famous mathematician of that era in Cambridge University) design a first digital mechanical general purpose computer named as analytical engine due to this great innovation of Babbage, He is known as the father of Computer.  But in those days there was no high technology exists in those days that can implement the Charles Babbage design.  Charles Babbage was the great researcher and he has not enough money that it can research and implement his design. For this purpose, he with his intelligent and famous student Ada the Countess for lovelies (She was the very famous student of Charles Babbage in mathematics and she writes the first computer program for Babbage’s Digital computer) both decide a plan to earn money. They work for the computing schemes and idea was that they will sell it to the peoples and earn money in this way and they could research easily but an idea flopped and they lose each and everything due to the cleverness of the Charles Babbage.

Harvard mark1

After that in 1943, a computer was made that works on the same principles of Charles Babbage design named as Harvard Mark1 in Harvard University.

This computer:

  • Was mechanical digital gen. purpose computer
  • Was crank driven
  • Could store instructions
  • Could perform mathematical calculations
  • Had the ability to print

Babbage Analytical Engine VS Modern computers:

Analytical Engine can perform all those calculations that a modern computer can do nowadays.

How is the Computer considered as it is better than human OR what the thing that is not possible to do except by using the computer?

There are many features that make the computer better than human. I will explain here 3 main features of a computer.

Blindingly Fast: Computer can perform calculations with very high speed even in the billionth part of a second. For example:

If anyone says to us that calculate 2 + 5. We will give the answer to him very fast that is 7 but if anyone says to us that calculate 5688766 + 57868788. Either W can answer it in 2 and 3 minutes and very accurate answer but if anyone says to us that calculate 8758867886*56786898 + 678986. We cannot do this. In that situation, Computers can calculate this in just a billionth part of a second.  So, Computer can perform calculations very fast.Introduction to Computer Short History of Computer

Accuracy: Computers cannot get bored they perform calculations and provide very accurate result in each and every time they were asked.  For example:

If a person is said to do a single task many times then it will be started to get bored and perhaps it will not give the answer clear and accurate after a time.  But computers can perform a single task many even billionths of the times. They don’t get bored. And will provide the result with that accuracy as they provide the very first time.Introduction to Computer Short History of Computer

Immense storage Capacity: Computers can store huge amount of data for a long and unlimited time. It means that a computer has a Hard Disk that is known as the secondary storage device and used to store data permanently. If we talk about books than a computer can store up to billions of books in its storage it depends upon the size of the hard disk that you are using on your computer.

What are the functions or things that a computer still cannot do like humans?

In some perspective, a computer cannot recognize a face as like humans. It means that computer cannot recognize a person sitting even in front of it. For example:

If we talk about Bazar and the place where there is a huge gathering of peoples and in this situation we can recognize the person even by watching his head or any body part. But this task is very difficult for the computer.  Above is the one example of it that a human cannot recognize a face or pattern like the human.

Can the computer think yes or not ….??? My answer is that it is neither yes nor not it just depends upon that how you define the term think. If thinking means to play chess game then it can think because in 1997 there was a match between computer D-Blue developed by IBM and a very good player of chess. The computer First time wins that match. How? (D-Blue developers call some chess players and store the billions of the common best instructions in the computer of that game and in this way the computer was analyzing the instruction and compare it to the stored instruction in just 1 or 2 minutes and select the best instruction among them).

So if your definition of thinking is just like to play chess game then computers can think and if the definition of the computer is just like the pattern or face recognition than a computer cannot think.Introduction to Computer Short History of Computer

How many computers s exists in this world….??? When we talk about the number of computers then it means that we are talking about the personal computers (PC). According to the latest analyses, it is said that about 600 million computers are present in this world.

Embedded Computers: Embedded computers are those that reside along with the hardware’s and are hidden in that hardware. Like the Microwave oven, Digital speed meter of a car, Burglar alarm etc…

They are not commonly focused but being the students of computer science we should have information about them. They exist about ten times more than Personal computers.

Summary of the 1st Lecture:

  • Very first digital computer
  • Inventor of the first digital computer
  • Very first digital computer VS modern computer
  • Capability of modern computers

In this Lecture, you learn Introduction to Computer Short History of Computer Appear for Next Lecture Soon….


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