IST 195 Notes

IST 195 Notes - Computing History The Mark 1 1944 Created...

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Computing History The Mark 1 – 1944  Created by Harvard Professor Howard Aiken  51 feet long, 8 feet tall 5 tons 500 miles of wire Used to decrypt messages from the Nazis  Moore’s Law (Gordon Moore) Observation made in 1965 Power of computing will double every 24 months “the number of transistors on an integrated circuit will double every 24 months and cost  per transistor decreases” Silicon: The Driving Force Vacuum Tube   Transistors   Integrated Circuits Key Terms PC – personal computer Server – controls access to the hardware, software, and other resources on a network  Ex.: Web servers, Mail servers, File servers, etc… Mainframes – large, expensive, powerful computer that can handle hundreds or  thousands of connected users simultaneously 
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Super Computers – fastest, most powerful computer… capable of processing more than  one quadrillion instructions in a single second  Mobile Computer – personal computer you carry from place to place Notebook computers, laptop computer, tablets  Mobile Device – computing device small enough to hold in your hand  Smart phones, PDAs, handheld computers, portable media players, digital cameras Green Computing Involves reducing the electricity consumed and environmental waste generated when  using a computer  Strategies Recycling  Virtualization* Cloud computing*  Extending the life of computers  Immediately donating or properly disposing of replaced computers Virtualization  Take one computer and have virtual instances  Use book definition Cloud Computing
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This note was uploaded on 02/07/2012 for the course IST 195 taught by Professor Staff during the Spring '08 term at Syracuse.

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IST 195 Notes - Computing History The Mark 1 1944 Created...

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