Generation of Computer 1st to 5th

1st Generation Computers(1949-1955):

The first electronic computer was developed in 1946, at the University of Pennsylvania in the USA, this computer named as ‘Electronic Numerical and Calculator (ENIAC)‘.

Features of 1st Generation Computers:

1. High Speed Vaccum Tube
2. Switching Device
3. Stored Program Concept
4. Store Machine Instructions in the Memory
5. Computer Programs are written in Machine language
6. Assembly language

2nd Generation Computers(1956-1965):

In these generations of the computer, Transistors are invented, transistors are reliable when compared with a tube. They occupy less space and they require less power. Another major issue in this generation is magnetic memories are invented.

Features of 2nd Generation Computers:

1. Transistor
2. Magnetic Memory
7. Operating System and Batch Operating System

3rd Generation Computers(1966-1975):

In these generations of the computer, germanium transistors being replaced by Silicon Transistors, medium-scale integrated circuits with 100 transistors per chip were developed.

Features of 3rd Generation Computers:

1. Silicon Transistor
2. Medium-Scale Integrated Circuit with 100 Transistor per chip
3. Main Memory Size 4 MB
4. Secondary Storage Size 100 MB
5. Time-Sharing System

4th Generation Computers(1976-1998):

In these generations of the computer, VLSI (Very Large Scale Integrated Circuit) was developed. UNIX operating system was developed in this time period.

Features of 4th Generation Computers:

1. VLSI (Very Large Scale Integrated Circuit)
2. UNIX Operating System
3. Pentium Processor with MMX (Multimedia Extension)
4. Optimal Disks
5. Computer Networks
6. High-Level Language Such as – C, C++, Java.

5th Generation Computers(1999-till today):

In this generation of computers, it is based on parallel processing hardware and AI (Artificial Intelligence). It means that the method of making computers think like human beings.

Features of 5th Generation Computers:

1. ULSI (Ultra Large Scale Integrated Circuit)
2. More Storage Space
3. Parallel Processing Hardware
4. Artificial Intelligence
5. Software
6. More Powerful Machine