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Calculating Rods (1619)
John Napier, Scottish, invented the Calculating Rods.
It would convert a multiplication problem to an addition problem -
Slide Rule (1620)
Edmund Gunter, English, invented the Slide Rule
Used to calculate logarithms. -
Adding Machine (1642)
Blaise Pascal, French, invented the Adding Machine
Used to add and subtract numbers -
Stepped Reckoner (1674)
Gottfried Wilhem von Leibniz, German, invented the Stepped Reckoner
Used to add, subtract, multiply and divide -
Punched Card Loom (1801)
Joseph Jacquard, French, redesigned the weaving loom using punched cards.
It was called the Punched Card Loom. -
Z1, Z2 & Z3 (1935-41)
Konrad Zuse from Germany invented the Z1, Z2 & Z3.
This was the first working automatic and fully programmable digital computer. Most of the world did not find out until much later. -
Colossus (1943)
Tommy Flowers from England invented the Colossus It was used to break German codes during WWII.
After the war, Churchill had the computer destroyed for security purposes. -
2nd generation (1954)
Transistors replaced the vacuum tubes -
3rd generation (1963)
Integrated Circuits replaced the Transistors.
1964 Digital Equipment Company introduced the PDP‐8 minicomputer for business.
1969 ARPANET (Internet) was created to be able to connect or communicate among the users of a network.
1971 Ray Tomlinson sent the first e‐mail between computers. The message was ‘QWERTYUIOP’. -
4th generation (1977)
Integrated Circuit Chips replaced the Integrated Circuits.
Personal Computers (Microcomputers) become available for home use. They were the Commodore Pet, TRS 80 and Apple II (1977).
1981 IBM finally entered the home computer market with the IBM PC. -
5th generation (1984)
Parallel Processing was widely accepted and wide area networks (WAN) and
local area networks (LAN) were developing rapidly.
Advancement in Artificial Technology
Tim Berners‐Lee created the World Wide Web. This was not simply a way to send files from one place to another but was itself a “web” of information that anyone on the Internet could retrieve. (1991) -
Analytical Engine (1835)
Charles Babbage, English, begins work on the Analytical Engine.
Lady Ada Augusta Lovelace is considered the 1st computer programmer based on her work with Babbage. -
1st GENERATION (1946)
John Mauchly and J. Presper Eckert from the University of Pennsylvania invented the ENIAC (1946). It used 18,000 vacuum tubes.
A vacuum tube is a tuve which contains air, and the air may let electricity pass or not.
John Mauchly and J. Presper Eckert invented the UNIVAC. It is considered the 1st commercial modern computer.
