This lesson includes: * Non-Mechanical Computers * Mechanical Computers * Electro - Mechanical Computers

1. COC 1: Install and Configure Computer System

2. History of Computers
Non – Mechanical Computers
Mechanical Computers
Electro – Mechanical Computers

3. • was an ancient memory aid device to
record and document numbers, quantities,
or even messages.
Non – Mechanical Computers
Tally Sticks

4. • The abacus was invented in Babylonia in 2400
B.C.
• The abacus in the form we are most familiar with
was first used in China in around 500 B.C.
• It used to perform basic arithmetic operations.
Non – Mechanical Computers
Abacus

5. • Invented by John Napier in 1614.
• Allowed the operator to multiply, divide
and calculate square and cube roots.
Non – Mechanical Computers
Napier’s Bone

6. • Invented by William Oughtred in 1622.
• Based on Napier's idea about logarithms.
• Used primarily for:
Multiplication, Division, Roots, Logarithm,
Trigonometry
Non – Mechanical Computers
Slide Rule

7. Tally Sticks
Abacus
Napier’s Bone
Non – Mechanical Computers
Slide Rule

8. • Invented by Blaise Pascal in 1642.
• It was its limitation to addition and
subtraction.
• It is too expensive.
Mechanical Computers
Pascaline

9. • Invented by Gottfried Wilhelm Leibniz in
1672.
• The machine that can add, subtract, multiply
and divide automatically.
Mechanical Computers
Stepped Reckoner

10. • The Jacquard Loom is a mechanical loom,
invented by Joseph-Marie Jacquard in 1881.
• It’s an automatic loom controlled by
punched cards.
Mechanical Computers
Jacquard’s Loom

11. • A mechanical calculator invented by
Thomas de Colmar in 1820.
• The first mass-produced calculating
machine.
Mechanical Computers
Arithmometer

12. Pascaline
Stepped Reckoner
Jacquard’ Loom
Mechanical Computers
Arithmometer

13. • Invented by Charles Babbage (Father of
Computer) in 1822.
Electro -Mechanical Computers
Difference Engine

14. • Invented by Charles Babbage (Father of
Computer) in 1834.
Electro -Mechanical Computers
Analytical Engine

15. • Lady Ada Augusta Byron Lovelace
• “The Enchantress of Numbers”
Electro -Mechanical Computers
First Programmer

16. • Invented by Herman Hollerith in 1890.
• To assist in summarizing information and
accounting.
Electro -Mechanical Computers
Tabulating Machine

17. • Also known as IBM Automatic Sequence
Controlled Calculator (ASCC).
• Invented by Howard H. Aiken in 1943.
• The first electro-mechanical computer.
Electro -Mechanical Computers
Harvard Mark 1

18. Difference Engine
Analytical Engine
Tabulating Machine
Electro -Mechanical Computers
Harvard Mark 1

19. ASTI Mulanay CSS Facilitator