Computer Generation Review And Use Of Systems | Lesson 1

Computer Generation Review And Use Of Systems | Lesson 1

Computer Generations :

From its origins to the present day, the development of specialized electronic components of computers has given rise to the modern computer. Keeping that in mind, computers can be divided into five generations.

1 First generation (1946-1955)

The main electronic device in this generation of computers was the vacuum tube. The use of vacuum tubes produced enormous heat in this generation of computers. Large in size and extremely slow in nature. In addition, the ability to publish results based on data was of poor quality. ENIAC, EDVAC were some of the computers of this generation.

2 Second generation (1956-1964)

The main electronic devices in this generation of computers were transistors, which were smaller in size than vacuum tubes, produced less heat, were much faster and more reliable. IBM-1401, NCR-304 are examples of this generation of computers.

3 Third Generation (1965-1974)

In the third generation ICs are used instead of transistors. It is very fast and reliable. As a result, this generation of computers is much faster and more powerful. IBM-360, ICL 2900, PDP II etc. are examples of this generation.

4 Fourth generation (1975 to present)

This generation uses VLIC chips as an improvement on IC chips. This generation of computers is small in size, consumes very little power and is very high performance. DEC 10. STAR-1000. The IBM-4341 is an example of this generation.

5 Fifth generation (awaiting future discoveries)

Scientists try to invent the fifth generation computer. Moving which will have its own intelligence (Artificial Intelligence). Much like humans will have their own thinking power.

Classification of Digital Computers:

A digital computer can be divided into four parts according to size

1 Micro Computer :

These computers are small in size and least expensive. Micro

We can divide the computer into two parts. 

1. Personal Computer, 
2. Portable Computer.

2 Mini Computer :

It is larger and more expensive than microcomputers. This computer is also used in multi user system, thus suitable for LAN system. NOVA, PDP II is an example of mini computer.

3 Mainframe Computer :

This computer is very big and very powerful. Has the ability to work with a lot of input-output data. It is usually used for large multi-user systems.

4 Super Computer :

This is the most powerful and expensive computer. Supercomputers can do many tasks at the same time. These computers are used for space research, weather forecasting etc. PARAM (Made in India), CRAY Italy is a hijack of this computer. The main feature of these computers is that they use multiple processors or CPU.

Summary And Information

•  From the origin to the present day with the development of specialized electronic components of the computer. Modern computers have been shaped. With that in mind, computers can be divided into five generations so far. First generation, second generation, third generation, fourth generation and fifth generation.
• Digital computers can be divided into four categories based on size. Namely- (1) Microcomputer, (2) Minicomputer, (3) Mainframe Computer and (4) Supercomputer.
• Three main parts can be seen in a computer system. Namely- (1) Input device, (2) processing device and (3) output device.
• Motherboard and modem are notable among the specialized components of the computer.
• Important devices such as memory, keyboard, monitor, printer, mouse, hard disk etc. are directly or indirectly connected to the motherboard.
• A modem is a device or device through which a computer can be connected to a telephone line to exchange information across the world through a network.
• Some of the most specialized tasks we do with computers are—typing, drawing, calculating, or having fun playing games on the computer.
• To run an application program (Ms Paint, Notepad etc.) with the help of Windows operating system, move the mouse pointer to Start → Programs Accessories and select from the list of software that is displayed and click the mouse to open the program.

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Lesson 2 - Computer systems and their review