- 1. Early counting and calculating tools. People used fingers, stones, tally sticks, and the abacus to perform arithmetic. Writing systems and numbers were developed during this period.
A) Pre-Mechanical Age (3000 BC – 1450 AD):
B) Mechanical Age (1450 – 1840):
C) Electromechanical Age (1840 – 1940):
- 2. The invention of mechanical calculators, gears, and early computing machines. Key developments included slide rules, mechanical calculators, and the Jacquard loom which used punch cards for pattern weaving — an early precursor to programming.
A) Electronic Age (1940 – Present)
B) Mechanical Age (1450 – 1840)
C) Electromechanical Age (1840 – 1940)
- 3. The use of electricity and relay switches in computing. Early telephone switchboards, tabulating machines, and electromechanical computers emerged. Binary mathematics (Boolean algebra) was developed by George Boole.
A) Mechanical Age (1450 – 1840)
B) Electromechanical Age (1840 – 1940)
C) Electronic Age (1940 – Present)
- 4. The invention of the vacuum tube, transistor, integrated circuit, and microprocessor. This age brought us the first electronic computers, personal computers, laptops, and smartphones.
A) Pre- mechanical Age
B) Mechanical Age
C) Electronic Age (1940 – Present)
- 5. Earliest known calculating tool. A frame with beads that slide on rods, used for arithmetic operations. Inventor with Sumerians/Chinese
- 2700 BC
A) Slide Rule
B) Napier's Bones
C) Abacus
- 6. Numbered rods used for multiplication and division by aligning rods to see results.1617
John Napier
A) Napier's Bones
B) Pascal's Calculator
C) Slide Rule
- 7. 1622
William Oughtred
Logarithmic scales for multiplication, division, and scientific calculations. Used for over 300 years.
A) Slide Rule
B) Abacus
C) Napier's Bones
- 8. 1642
Blaise Pascal
First mechanical adding machine for addition and subtraction using gears and wheels.
A) Jacquard Loom
B) Pascal's Calculator
C) Difference Engine
- 9. 1673
Gottfried Leibniz
Improved calculator that could add, subtract, multiply, and divide. Introduced the stepped drum mechanism.
A) Jacquard Loom
B) Leibniz Wheel
C) Difference Engine
- 10. 1804
Joseph Jacquard
Used punch cards to control weaving patterns — a direct precursor to computer programming.
A) Jacquard Loom
B) Hollerith Tabulating Machine
C) Analytical Engine
- 11. 1822
Charles Babbage
Automatic calculating machine for polynomial functions. Never fully built in Babbage's lifetime.
A) Abacus
B) Analytical Engine
C) Difference Engine
- 12. 1837
Charles Babbage
Concept of a general-purpose programmable computer with memory, processor, and input/output. Designed by Babbage, programmed by Ada Lovelace.
A) Difference Engine
B) Analytical Engine
C) Pascal's Calculator
- 13. 1890
Herman Hollerith
Used punch cards to tabulate the US census data in just 2.5 years. Company later became IBM.
A) Pascal's Calculator
B) Hollerith Tabulating Machine
C) Analytical Engine
- 14. Technology: Vacuum tubes were used for circuitry and magnetic drums for memory.
Characteristics: Very large (room-sized), expensive, generated enormous heat, consumed huge amounts of electricity, and frequently broke down.
Programming: Machine language only (binary code).
Examples: ENIAC (30 tons, 18,000 vacuum tubes), UNIVAC (first commercial computer), EDVAC, EDSAC.
A) Second Generation (1956–1963) — Transistors
B) Third Generation (1964–1971) — Integrated Circuits
C) First Generation (1940–1956) — Vacuum Tubes
- 15. Technology: Transistors replaced vacuum tubes.
Characteristics: Smaller, faster, cheaper, more energy-efficient, and more reliable than first-generation computers.
Programming: Assembly language and early high-level languages like COBOL and FORTRAN.
Examples: IBM 1401, IBM 7090, UNIVAC 1107.
A) Fourth Generation (1971–Present) — Microprocessors
B) Third Generation (1964–1971) — Integrated Circuits
C) Second Generation (1956–1963) — Transistors
- 16. Technology: Integrated circuits (ICs) — multiple transistors on a single silicon chip.
Characteristics: Even smaller, faster, more affordable, and more efficient. Keyboards and monitors replaced punch cards as input/output devices.
Programming: High-level languages flourished: BASIC, Pascal, C, and operating systems emerged.
Examples: IBM System/360, PDP-8, Honeywell 6000 series.
A) First Generation (1940–1956) — Vacuum Tubes
B) Fifth Generation (Present & Beyond) — AI & Quantum Computing
C) Third Generation (1964–1971) — Integrated Circuits
- 17. Technology: Microprocessors (CPU on a single chip). Intel 4004 was the first.
Characteristics: Personal computers became affordable and widely available. Laptops, smartphones, and tablets emerged.
Programming: GUI-based operating systems (Windows, macOS, Linux) and modern programming languages (Java, Python, JavaScript, C++).
Examples: IBM PC, Apple Macintosh, Intel-based PCs, smartphones.
A) Fourth Generation (1971–Present) — Microprocessors
B) Third Generation (1964–1971) — Integrated Circuits
C) Fifth Generation (Present & Beyond) — AI & Quantum Computing
- 18. Technology: Artificial intelligence, machine learning, quantum computing, neural networks, natural language processing.
Characteristics: Computers that can learn, reason, and make decisions. Parallel processing and quantum bits (qubits) allow solving problems impossible for classical computers.
Applications: Self-driving cars, medical diagnostics, voice assistants (Siri, Alexa), facial recognition, language translation.
Examples: IBM Watson, Google Quantum AI, GPT models, autonomous vehicles.
A) First Generation (1940–1956) — Vacuum Tubes
B) Fifth Generation (Present & Beyond) — AI & Quantum Computing
C) Second Generation (1956–1963) — Transistors
- 19. Proposed the Universal Machine concept (Turing Machine). Created the Bombe to crack the Enigma code during WWII. Father of theoretical computer science and AI.
A) Ada Lovelace
B) Bill Gates
C) Alan Turning
- 20. Designed the Difference Engine (1822) and Analytical Engine (1837) — the first concept of a programmable general-purpose computer.
A) Johnvon Newman
B) Charles Babbage
C) Tim Berners Lee
- 21. Wrote the first algorithm intended for execution on a machine (the Analytical Engine). Recognized as the world's first computer programmer.
A) Tim Berners Lee
B) Steve Jobs & Steve Wozniak
C) Ada Lovelace
- 22. Developed the stored-program concept (Von Neumann Architecture) where instructions and data share the same memory — the foundation of most modern computers.
A) Johnvon Newman
B) Alan Turning
C) Ada Lovelace
- 23. Developed the first compiler (A-0). Pioneered COBOL. Helped popularize the concept of machine-independent programming languages.
A) Bill Gates
B) Grace Hopper
C) Tim Berners Lee
- 24. Invented the World Wide Web (WWW) in 1989 — forever changing how we access and share information.
A) Ada Lovelace
B) Charles Babbage
C) Tim Berners Lee
- 25. Co-founded Apple and popularized the personal computer with the Apple II and Macintosh. Jobs drove innovation in smartphones (iPhone) and tablets (iPad).
A) Charles Babbage
B) Bill Gates
C) Steve Jobs $ Steve Wozniak
- 26. Co-founded Microsoft. Developed MS-DOS and Windows operating systems, bringing personal computing to millions of homes and businesses.
A) Johnvon Newman
B) Bill Gates
C) Alan Turning
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