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Period: to
Computer History
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Napier Bones
In 1614, John Napier created a set of rods used to execute different calculations. The rods were used to divide, multiply, and other math problems. -
Joseph-Marie Jacquard
IN 1801, Jacquard invented a weaving loom that used punch cards to duplicate designs. The beginning of the punch card was a life-changing step for computer input. -
Charles Babbage
IN 1832, Babbage created the first machine with the idea of input-execution-output. The machine was named the "different engine". It consisted of gears and levels and was steam powered. For input, the machine used punch cards and operated entry. For output, it recorded on soft metal plates. -
Herman Hollerith
Hollerith created a punched card calculator that was used in counting the U.S. census. The Hollerith machine made it possible to complete the census in 6 weeks compared to 7 years. -
Lee De Forest
In 1906, Forest invented the electronic tube. This vacuum tube led to the electronic computer. The electronic tube is in the top three most crucial parts of the development of the computer. -
Colosuss
In 1943, a computer that was named Colosuss was made in Great Britain. Colosuss' main job was code-breaking. There were 10 of these computers made, but unfortunately they were destroyed after World War II.This was because British government feared they would be used against the British Empire. -
Cray 1
The Cray 1 was the first ever supercomputer available for purchase. It was delivered in 1976. The Cray 1 could do 150 million calculations per second. -
Apple
Steve Wozniak and Steve Jobs finished work on a circuit board for a microcomputer.They called their new computer Apple 1. In just a few months, they had sold so many of their computers that they had enough money to come out with an even more improved computer. This new computer was the Apple II and was released in 1977 -
Commodore Business Machines
In 1977, Commodore came out with its first personal computer, the PET. It was slightly similar to the Apple I. Later Commodore released several more improved personal computers, such as the C64, the C128, and the VIC-20 series. -
Intel's 8086 microprocessor
In 1978, Intel produced the 8086 microprocessor. It was a true 16-bit microprocessor, which had the computing power of 29,000 transistors. It contributed more power and speed to personal computers. -
IBM asks Microsoft
In 1980, IMB asked Gates and Allen to write an operating system for a new PC.
