Timeline: FOT A 2B Anthony D.

100

Evidence of Counting

Counting
Counting numbers
50,000 B.C.

101

Metal

Metals
Metals are created and used.
Metals are used in computers.
4000 B.C

102

Writing

Writing
Evidence of writing,
3,500 BC

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.

104

Hieroglyphics

hieropglyphics
Hierglyphic numerals are first used in Egypt.

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

107

Iron

iron
Iron began being developed around 2000 BC

440

First Printing Press

Printing press

Jan 1, 1502

First Mechanical Computer

Leonardo da Vinci invents the mechanical calculator.

Jan 1, 1613

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

Jan 1, 1679

Binary Code

Gottfried Leibniz demonstrates binary arithmetic, a discovery that shows every number can be represented by 0 and 1 only.

Jun 10, 1752

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.

Jan 1, 1774

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.

Jan 1, 1831

First Working Telegraph

Working Telegraph
Joseph Henry of Princeton created the first working telegraph.

Jan 1, 1936

First computer

Computer
Named the Konrad Zuse's Z1 Circa 1938. Invented by Konrad Zuse.

Oct 1, 1942

ABC Computer

This was the first electrical digital computer. This was invented by John Atanasoff & Clifford Berry.

Oct 1, 1944

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.