Download History of Computers PPT and PDF: The definition of a computer is as follows: “Computer is a programmable machine which skillfully operates the data depending on the instructions.” So, in brief, it is any device which helps the human kind in solving different types of computations. We are giving here History of Computers PPT and PDF. Also See: History of Computers PPT and PDF Now let us know the history of computers, how they are evolved and their types are as follows: Earliest Computers: From the beginning, calculations were performed by the human beings with the job title as computers. For the first time, the word computer was used in 1613 and this continued till the middle of 20th century. Tally Sticks Tally stick was an old memory helping the device to write down numbers, messages etc. Abacus An abacus is the mechanical machine used to help a particular person in computing mathematical computations and it was invented in Babylonia in 2400 B.C.
Blood Money Full Movie Free Download 3gp there. Download History of Computers PPT and PDF: The definition of a computer is as follows: “Computer is a programmable machine which skillfully operates the data. History of Computer Science - PowerPoint PPT Presentation. Download Presentation. History of Computers. Computer History Charles Babbage English inventor 1791-1871 taught math at Cambridge University invented a viable mechanical computer. History of Computers PPT and PDF: Definition of a Computer and Modern Computer, Abacus, Napier Bones, Side rule, Pascaline, Stepped Reckoner, Jacquard Loom.
Napier Bones John Napier invented Napier’s bones in 1614 which was used for multiplying, dividing and calculating square roots and cube roots. These operations were performed by moving the rods in unique boards which are constructed for them. Side rule In 1622, William Oughtred invented side rule based on the ideas of Napier about logarithm.
Side rule was specially designed for performing only multiplications, divisions, roots, trigonometry and logarithms. Pascaline Blaise Pascal invented pascaline in 1642; it was the expensive machine which has the limitations in performing additions and subtractions. Stepped Reckoner In 1672, Gottfried Wilhelm Leibniz invented Stepped Reckoner which was automatically performing the operations like addition, subtraction, multiplication, and division. Jacquard Loom Joseph- Marie Jacquard invented a mechanical loom called Jacquard loom in the year 1881.It was controlled by punch cards and was an automatic loom. Arithmometer In 1820, Thomas de Colmar invented a mechanical calculator called arithmometers. It was a successful and useful machine which could perform the basic mathematical calculations. Difference Engine and Analytical Engine: Charles Babbage invented difference engine and analytical engine in the year 1822 and 1834 respectively.
It was the foremost mechanical computer used to tabulate the polynomial functions. First computer programmer Augusta Ada Byron wrote the programs for analytical engine and suggested Charles Babbage aid the binary system in 1840. Scheutzian calculation engine Per George Scheutz invented the first printing calculator having a base on difference engine in 1843. Betty Edwards L Arte Del Colore Pdf Download. Tabulating machine The Tabulating machine was invented in the year 1890 by Herman Hollerith, it was used to accomplish in expressing the data and accounts in a concise form.
Harvard Mark1 Harvard Mark1 was the first electro –mechanical device which was invented by Harvard H. Aiken in the year 1943 and also known as IBM ASCC (Automatic Sequence Control Calculator). Z1 Konrad Sure made the foremost programmable computer calledZ1 from the year 1936 to 1938.