History of Computer

Pre computer age (before 1800s)

• Abacus (around 2400 BC):The first tool used for calculation
• Pascaline(1642):A mechanical calculator invented by Blaise Pascal. It could add and subtract numbers.
• Leibniz Calculator (1673):Invented by Gottfriend Leibniz, it could multiply and divide too.

Concept of modern computers (1800s)

• Charles Babbage -“Father of the computer” designed the analytical engine in the 1830s. First concept of a general-purpose computer.
• Ada Lovelace- “First Computer programmer.” Wrote the first algorithm meant for the Analytical Engine.

Electromechanical Era (1930s – 1940s)

• Z3(1941): By Konrad Zuse- first programmable mechanical computer.
• Colossus (1943): Used by the British during WWII to break enemy codes.
• ENIAC(1946): First general-purpose electronic computer, built in the USA

Commercial Computers (1950s – 1960s)

• UNIVAC I(1951): First computer sold businesses and used for real-world data processing.
• Mainframe Computers: Large machines used by companies and governments.

Personal Computer Era (1970s – 1980s)

• 1975 – Altair 8800: First personal computer kit.
• 1977 – Apple II: First easy-to-use PC with a keyboard and monitor..
• 1981 - IBM PC: Standard for business and home computers

Modern Computers (1990s to present)

• Laptop, smartphones, tablets, and cloud computing.
• Internet revolution, graphical interfaces (Windows, macOS).
• Fast processors, huge storage, and AI (Artificial Intelligence)