Key developments
Many new ideas have contributed significantly to the development of computer systems.
Some of the key developments of computer systems from the past are:
• Abacus - calculating device (3000 BC)
• Pascaline - mechanical adding machine (1642)
• Babbage - analytical engine (1830s)
• Ada - first programmer (1800s)
• Punched cards - data storage (1800s)
• Hollerith - tabulating machine (1890s)
• Mark I - general purpose computer (1944)
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• ENIAC - electronic computer (1946)
• UNIVAC - US Census Department (1951)
• EDVAC - Stored Program Concept (1951)
• Generation of Computers
• Classification of Computers
• Microprocessor chip
• Floppy disk for data storage
• Pocket Calculator
• Apple II - first personnel computer
• IBM PC
• Portable computers
• Laser Printing and Desktop Publishing
• Multimedia desktop computers
• Home video computers
• Video conferencing