History of Computers • 1. The History of Computers • What is a computer? A computer is an electronic machine that accepts information ( Data ), processes it according to specific instructions, and provides the results as new information. Monitor Floppy Disk Drive System Unit Keyboard CD-ROM / DVD-ROM Drive Mouse • I- Ancient Counting Machines 1- The Abacus (base 5) (in ancient Babylon, China, Europe) 2- The Roman Numerals I II III IV V VI VII VIII IX X 3- The Arabic Numerals (base 10) 0 1 2 3 4 5 6 7 8 9 10 Ancient Time • II- Mechanical Counting Machines 4- The Pascaline is a mechanical calculating device invented by the French philosopher and mathematician Blaise Pascal in 1642. Antamedia Hotspot Enterprise Full Version Crack Download.

Computer History Charles Babbage English inventor 1791-1871 taught math at Cambridge University invented a viable mechanical computer. The PPT shows progress, evolution and history of computers or computing over time. Of future being more mobile and more powered as compared to desktops and laptops, including the one I am using to compile the history of computing as a presentation. Download Link PDF: Progress of Computers. I Am A Barbie Girl Songs Mp3 Download.

(+) 1642 • II- Mechanical Counting Machines 5- The Leibniz Wheel was invented by the famous mathematician Leibniz in 1673. ( +, -, *, / ) 1673 • II- Mechanical Counting Machines 6- Punched Cards were used by the French weaver Joseph Jacquard in 1810. The cards carried weaving instructions for the looms, later this idea offered a great use for storing info. 1810 • II- Mechanical Counting Machines 7- Babbage’s Difference Engines were calculating machines made by Charles Babbage to produce tables of numbers that would be used by ship’s navigators.

1852 1832 This device had mechanical problems similar to those that plagued Pascal and Leibniz. • The Invention of the Vacuum Tube 8- Initially discovered by Thomas Edison, the vacuum tube formed the building block for the entire electronics industry. *Vacuum tubes were later used as electron valves in the 20th century to build the first electronic computers. 1883 • III- Electrical Counting Machines along with punched cards instead of mechanical gears. 9- The US census of the 1880 took 9 years to compile and led to inaccurate figures. Download Scary Pc Escape Games Free. To solve the problem, Herman Hollerith invented a calculating machine that used electricity 1888 • III- Electrical Counting Machines Hollerith’s machine was immensely successful.