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Oct 21, 2014
HISTORY OF THE COMPUTER
HISTORY OF THE COMPUTERTHE ELECTRONIC AGE1941-PRESENT
1941: KONRAD ZUSEBuilt the first programmable computer called the Z3, capable of following instructions.
Z3- was the first fully functional, PROGRAM CONTROLLED computer of the world.Z1Z3
1942-Howard Hattaway AikenA student of Harvard University built the Mark I The First Stored-Program Computer.
ASCC Harvard Mark 1 is 8 feet tall, 51 feet long, 2 feet thick, weighed 5 tons, used about 750,000 parts, 500 miles of wires, 3-5 seconds per calculation.A- AutomaticS-SequenceC-ControlledC-Calculator
1942: John Atanasoff and Clifford BerryCompleted the first all electronic computer, called the ABC Computer, it was the first computer to use electricity in the form of vacuum tubes to help make electric computation possible. This is used for solving complex system of equations.
THE FOUR GENERATIONS OF DIGITAL COMPUTING
THE FIRST GENERATION COMPUTERS: 1951-1958VACCUM TUBES AS THEIR MAIN LOGIC ELEMENTS.PUNCH CARDS TO INPUT and EXTENALLY STORE DATA.ROTATING MAGNETIC DRUMS FOR INTERNAL STORAGE OF DATA PROGRAMS.
First generation computer had vacuum tubes, resistors, and welded metal joints. They were large, slow, expensive, and produced a lot of heat.Often broke down because of burned-out vacuum tubes.Also needed many experts to operate them.When running these computer, people stood by shopping carts full of replacement of vacuum tubes.
1945: PRESPER EKERT andJOHN MAUCHLYDeveloped the first operational electronic digital computer, called ENIAC, for the US Army. It is over 1000 times faster than Mark I, and could perform 5,000 additions per second.E- ElectronicN-NumericalI-IntegratorA-andC-Calculator
ENIAC had more than 18,000 vacuum tubes, and took up 1,800 square feet of space.In addition, the electrical current of ENIAC required could power more than a thousand modern computers.Today ENIACs technology could fit in a modern wristwatch.
ECKERT and MAUCHLY
1951: UNIVACThis computer was also designed by Eckert and Mauchly, became the first commercially available electronic computer.One of this version the UNIVAC 5 was used to predict result of the 1952 US presidential election. It is used for business transactions and operations.
UNIVAC is 5 feet tall, 50 feet in length.Consist of 5,600 vacuum tubes and 18,000 crystal diodes.An internal storage of 1000 words or 12,000 characters.UNIVersal Automatic Calculator
1951-1953: MAGNETIC CORE MEMORYThis was the fastest type of memory until the late 1980s.
1953: IBM 701Known as the DEFENSE CALCULATOR. IBMs first commercial or business scientific calculator.
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