CHAPTER -1
E.D.P (ELECTRONIC DATA PROCESSING) 1.BASIC OF COMPUTERS;
computer;
A computer is an electronic device used to process data converting the data into information that is useful to people Any computer regardless of its type-is controlled by programmed instructions, which give the machine is purpose and tell what todo.
History of computer;
History of computer;
History of computers consists of three ages;
1.Dark Age (3000B.C.to 1890 A.D)
2.Middle Age (1890 to 1944)
3. Modern age (1944 onwards)
Throughout history man has constantly looked for ways of making calculation easiest .for this purpose man developed and invented different types of machines to make calculation simplest.
1.B.C.Abacus-China
2.1600-Napier Bones-John Napier- Scotland
3.1642- Adding Machines Blaise Pascal-france
4.1692-Multiplying machine gottfried-leibniz-germany
5.1800-Jacquard loon joseph marie jacquard-france
6.1813-Difference engine-charles babbage-england
7.1863-Analytic engine- charles babbage england
8.1896-Punch card machine Dr. herman hallerith- US.A
Early Electronic computers;
1.1930-Turning Machine- Alan Turning-England
2.1939-ABC (Atnaoff Berry Computer) - John Atanasoff.
3.1943-ENIAC-Harvard University- U.S.A
4.1944-mARK I-Dr. Howard Aiken-U.S.A
5.1947-EDSAC- Cambridge University-England
6.1951-UNIAC-I --U.S.A.
END
1.Dark Age (3000B.C.to 1890 A.D)
2.Middle Age (1890 to 1944)
3. Modern age (1944 onwards)
Throughout history man has constantly looked for ways of making calculation easiest .for this purpose man developed and invented different types of machines to make calculation simplest.
1.B.C.Abacus-China
2.1600-Napier Bones-John Napier- Scotland
3.1642- Adding Machines Blaise Pascal-france
4.1692-Multiplying machine gottfried-leibniz-germany
5.1800-Jacquard loon joseph marie jacquard-france
6.1813-Difference engine-charles babbage-england
7.1863-Analytic engine- charles babbage england
8.1896-Punch card machine Dr. herman hallerith- US.A
Early Electronic computers;
1.1930-Turning Machine- Alan Turning-England
2.1939-ABC (Atnaoff Berry Computer) - John Atanasoff.
3.1943-ENIAC-Harvard University- U.S.A
4.1944-mARK I-Dr. Howard Aiken-U.S.A
5.1947-EDSAC- Cambridge University-England
6.1951-UNIAC-I --U.S.A.
END
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