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100
Evidence of Counting
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103
Bronze Age
Bronze Age
making bronze from natural ores. The Bronze Age is more advanced than the Stone Age. It was important to mankind because it allowed us to create more durable tools and artifacts for productive use. -
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105
Abacus
Abacus
Also known as a counting frame.
Mechanical device used to assist a person in performing mathematical calculations.
2600 BC -
106
Decimals
Decimals
1350 BC -
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Jan 1, 1502
First Mechanical Computer
Leonardo da Vinci invents the mechanical calculator. -
The Word "Computer"
[Computer](en.wikipedia.org/wiki/Computer_(astronomer_term))
The word "computer" meant "one who computes" before the 17th century.
Now means: An electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program -
Binary Code
Gottfried Leibniz demonstrates binary arithmetic, a discovery that shows every number can be represented by 0 and 1 only. -
Electricity
This is a key element in computers. Electricity was discovered by Benjamin Franklin. He flies a kite that collects a charge after being struck by lightning. -
First Telegraph
First Telegraph!
The first telegraph was conceived in 1753 and built in 1774. They required 26 wires, one for each letter in the alphabet. -
First Working Telegraph
Working Telegraph
Joseph Henry of Princeton created the first working telegraph. -
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ABC Computer
This was the first electrical digital computer. This was invented by John Atanasoff & Clifford Berry. -
Harvard Mark 1 Computer
computerInvented by Howard Aiken & Grace Hopper. controlled by pre-punched paper tape, could carry out addition, subtraction, multiplication, division and reference to previous results. It had special subroutines for logarithms and trigonometric functions and used 23 decimal place numbers. Data was stored and counted mechanically using 3000 decimal storage wheels, 1400 rotary dial switches, and 500 miles of wire. Its electromagnetic relays classified the machine as a relay computer. -
FORTRAN Computer Programming Language
FORTRAN Computer Programming LanguageThe first successful high level programming language. Created by John Backus & IBM -
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RAM
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Microprocessor
The first microprocessor.
By: Faggin, Hoff & MazorIntel 4004 Computer Microprocessor -
FLOPPY DISK
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Computers for Consumers
1974-1977
First computers for consumers.
Scelbi & Mark-8 Altair & IBM 5100 Computers
Apple I, II & TRS-80 & Commodore Pet Computers -
Lisa Computer
Apple
This is the first computer with a GUI (Graphical User Interface). Created by Apple -
Microsoft vs. Apple
Microsoft Windows begins friendly war with Apple -
Maya and Mathematics
