The History of Computers

(Napier's Bones) (1680)

Jan 1, 1680

[Source:]( http://en.wikipedia.org/wiki/History_of_computing_hardware)[Source: ]( http://en.wikipedia.org/wiki/Napier's_bones)It is an abacus like device that simplifies calculations that involve multiplication and division. It was based on Arab mathematics and the lattice multiplication.

(Z3 Computer) (1941)

May 12, 1941

Source:Link:It was an early computer built by German engineer Konrad Zuse. Using, 2,300 relays, the Z3 used floating point point binary arithmetic and had a 22-bit word length. The first Z3 was destroyed in a bombing scene in Berlin in the late 1943.

ENIAC Invented (First Computer)

Feb 14, 1946

Source:The ENIAC was the final electronic computer inevented by the U.S. Army during World War 1. The ENIAC costs about $500,000 to build and was 1800 square feet.

(ERA 1101 Computer) (1950)

Dec 1, 1950

[Source:]( http://www.computerhistory.org/timeline/?year=1950)[Source:](http://en.wikipedia.org/wiki/UNIVAC_1101)The Engineering Research Associates of Minneapolis built the ERA 1101. It was the first commercially produced computer. THe company's first customer was the U.S. Navy. It held 1 million bits on a megnetic drum, the earliest magnetic pulses in tracks around a metal cylinder.

(TRADIC Computer) (1955)

Jan 1, 1955

Source:Source: It was announced the first fully transistorized computer. It contained 800 transistors instead of cacuum tubes. It was invented at Bell labs. It operated on fewer than 100 watts.

(Communication Satellites) (1960)

Aug 12, 1960

[Source:]( http://en.wikipedia.org/wiki/Wireless_network)[Source:](http://en.wikipedia.org/wiki/Communications_satellite)The satellites are stationed in space. 35,400 km above the equator. These Earth orbiting systems are capable of receving voice, data, and TV signals.

(DEC's PDP-1 Computer) (1960)

Dec 1, 1960

Source: Source: It consisted of a cathode ray tube graphic display. It needed no air conditioning and required only one operator. there were only 50 computers made.

(ILLIAC IV) (1966)

Nov 1, 1966

[Source: ]( http://www.computerhistory.org/timeline/?year=1966)[Source:](http://en.wikipedia.org/wiki/ILLIAC_IV)The Deparntment of Defense Advanced Research Projects Agency contracted with the University of Illionios to build a large computer. It has a computation speed of 200 million instructions per second, about 300 million operations per second, and 1 billion bits per second.

(Ethernet) (1973)

May 22, 1973

[Source: ](Link: http://en.wikipedia.org/wiki/Ethernet)It is a family computer local area and larger networks. By using this they went from 10 megabits per second to 100 gigabits per second. They also used the Cat 5 cables for the network.

(Xerox Alto) (1974)

Mar 1, 1974

Source: Source: It was the first owkr station with a built in mouse for input. The alto stored several files in windows, offered menus and icons, and could link to a local network.

(Apple-1) (1976)

Apr 11, 1976

[Source: ]( http://www.computerhistory.org/timeline/?year=1976)[Source:](http://en.wikipedia.org/wiki/Apple_I)Steve Wozniak designed the Apple-1, a single board computer. They ordered 50 systems form Mountain Veiw, California. Then Steve Jobs and him started a company called Apple Computer, Inc. 200 boards were sold before they announced the Apple II.

(VAX 11/780) (1978)

Oct 25, 1978

[Source: ]( http://www.computerhistory.org/timeline/?year=1978)[Source: ](http://en.wikipedia.org/wiki/VAX-11)The VAX 11/780 from Digital Equipment Corp. featured the ability to address up to 4.3 gigabytes of memory. It also is in the family of minicomputers.

(First PC) (1981)

Aug 12, 1981

[Source:]( http://www.computerhistory.org/timeline/?year=1981)[Source:](http://en.wikipedia.org/wiki/IBM_Personal_Computer)It was introduced by the IBM. It ran on a 4.77 MHz Intel 8088 microprocessor and used Microsoft's MS-DOS.

(Apple Lisa) (1983)

Jan 19, 1983

[Source:]( http://www.computerhistory.org/timeline/?year=1983)[Source:]( http://en.wikipedia.org/wiki/Apple_Lisa)Lisa is the first personal computer with a graphical user interface. The Lisa was very high priced all the way to $10,000! Which set it to failure. It ran on a Motorola 68000 microprocessor and came equipped with 1 megabyte of RAM.

(ARPERNET) (1983)

Mar 1, 1983

Source:It was one of the world's first operational packet switching networks. It was funded by the Advanced Research Project Agency.

(Bluetooth) (1994)

Jan 1, 1994

[Source:]( https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&es_th=1&ie=UTF-8#q=when+was+the+bluetooth+invented)[Source:](http://en.wikipedia.org/wiki/Bluetooth)It's a wireless technology for exchanging data over short distance. Bluetooth is managed by Bluetooth Special Intrest Group, which has more than 20,000 members.