-
Jan 1, 1000
Abacus
1,000 to 500 BC
1. First actual calculating device
2. Maybe invented by the babylonians or the chinese -
Jan 1, 1000
Abacus
invented by Babylonians or Chinese -
Jan 1, 1000
Abacus
invented in mesopotamia -
Napier's Bones
invented in scotland -
Napier's Bones
1600's
1. multiplication tables inscribed on strips of wood or bone -
Napier's Bones
invented by John Napier -
Slide Rule
invented in scotland -
Slide Rule
1600's
1. used napier's work to design slide rule
2. longest use of a computing device
3. used by NASA -
Slide Rule
invented by william oughtred -
Pascaline
- first operational calculating machine
- helped his father add sums of money
- could only add and subtract
-
Pascaline
invented by Blaise Pascal -
Jaquard loom location
-
The Jacquard Loom
The Jacquard loom was a machine invented by Joseph Marie Jacquard 1801, was used punch cards to create patterns on woven fabric. This loom machine was a great invention because it led to the keypunch machine. -
Ada's First Computer Program
Augusta Ada Byron King aka Ada Lovece was known as the first computer programmer. She wrote codes for Charles Babbage analytical engine and foresaw the first computer. -
Ada's Location
-
Charles Babbage
-
Location of Difference Engine
-
Difference Engine
The difference engine was an early mechanical calculator using gears and rods to calculate complex equations. It was invented by charles babage in 1822 but was never completed because he started inventing a more sophisticated machine called Analytical Engine. -
Hollerith's Tabulating Machine
Hollerith's tabulating machine, a machine used to help people on tabulations, was created in 1884. He used electrical charges to move the gears to punch cards for the US 1890 census. -
US
-
Herman Hollerith
-
Pascaline
invented in france
