Computer History
IntroductionBabbage- 1800's invention had input, storage, processing, and outputENIAC- needed to flip switches and connect wires Types of Storage-ROM, RAM, Hard Drive, and FloppyProcessors-are made up of many switches Digital InformationBits-smallest unit of info (in ASCII: American Standard Code for Information Interchange)Pixels-480 x 640 lines resolution (much more at present) Microprocessors-used in car brakes and in remote controls
ey are programmed when they are manufactured-allows computers to be programmed-must be given good instructions-its vocabulary is binary code (1&0 s or on/off)-to be a software engineer you must think logically and breakdown the big ideas into smaller ones-Fetch: gets the code by retrieving it from memory Decode: finds out what the code does Execute: does the math and what the instructions tell it to do-78 microprocessors in Audi cars by 2005 Creating Chips -chips are made in totally clean room-millions of switches per chip-mass-designers translate ideas into physical designs-clean room is 1000 times cleaner than surgical room-they start out as silicon ingots-are assembled by computer controlled robotics-Assembly Process: 1. create a mask over the material 4. the excess material is etched away.
Common topics in this essay:
Interchange Pixels-480,
Creating Chips,
Introduction Babbage-,
Floppy Processors-are,
Information Bits-smallest,
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