Generations_of_Computers (1)

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GENERATIONS OF COMPUTERS

IDC Assignment – Fundamentals of Computer Science and its Applications

1. First Generation (1940–1956)

• Used vacuum tubes for processing and control.

• Very large, expensive and produced a lot of heat.

• Used machine language for programming.

• Examples: ENIAC and UNIVAC I.

• Mainly used for scientific and military calculations.

Picture to paste: ENIAC / vacuum tube computer

2. Second Generation (1956–1963)

• Transistors replaced vacuum tubes.

• Computers became smaller, faster and more reliable.

• Used assembly language and early high-level languages.

• Produced less heat and consumed less electricity.

• Examples included IBM 1401 and CDC 1604.

Picture to paste: transistor-based computer

3. Third Generation (1964–1971)

• Integrated Circuits (ICs) were introduced.

• Many electronic components could be placed on a single chip.

• Computers became more powerful and affordable.

• Keyboards and monitors became common.

• Operating systems improved during this period.

Picture to paste: integrated circuit / mainframe

4. Fourth Generation (1971–Present)

• Microprocessors brought the CPU onto a single chip.

• Personal computers became widely available.

• Computers became much smaller, faster and cheaper.

• Laptops, smartphones and modern PCs developed from this technology.

• Examples: early Apple and IBM personal computers.

Picture to paste: personal computer / laptop

5. Fifth Generation and Beyond

• Focuses on Artificial Intelligence and advanced computing.

• Uses technologies such as machine learning, robotics and natural-language processing.

• Modern systems can learn from data and perform complex tasks.

• Cloud computing and powerful mobile devices are also important.

• The future may include more advanced AI and quantum computing.

Picture to paste: AI robot / modern computer