2. History of the Computer

3. How the Computer Evolved 1642 Blaise Pascal – mechanical adding machineBlaise Pascal Early 1800’s Jacquard – uses punch cards to control the pattern of the weaving loomJacquard 1832 Charles Babbage - invents the Difference EngineCharles Babbage 1890 Herman Hollerith – invents a machine using punch card to tabulate info for the CensusHerman Hollerith Hollerith’s Tabulating Machine

4. Evolution (continued) 1910 Charles Watson Sr. – International Business Machines 1946 – Mauchly and Eckert created the ENIAC computer, first electronic computer is unveiled at U. of Pennsylvania 1970’s – Integrated circuits and silicon chips lead to smaller microprocessors

5. ENIAC Computer Miles of wiring 18,000 vacuum tubes Thousands of resistors and switches No monitor 3,000 blinking lights Cost $486,000 100,000 additions per second Weighed 30 tons Filled a 30x50 foot room Could be replaced today by one fingernail-size silicon chip

6. Computer History of HLHS