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Only performed addition (never worked) invented by Blaise Pascal (mathematician)
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Firs add, subtract, multiply, divide & square roots (malfunctioned parts - ahead of it's time)https://en.wikipedia.org/wiki/Stepped_reckoner
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Made for navigation ships (lost at sea )- never built but led to analytical engine was started in 1823 made by Babbage
https://en.wikipedia.org/wiki/Difference_engine -
followed programs on punched cards & disigned to make decisions based on programs (never finished)https://en.wikipedia.org/wiki/Analytical_Engine
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made for WWII trajectory of shells but finished after war was over
- solved problem that team of mathematicians need three day in twenty seconds!
-30 tons & 1500 sq feet
https://en.wikipedia.org/wiki/ENIAC -
IBM- used punch cards - but could not make decisions so still calculator (sophisticated) but 51 feet in length weight 5 tonshttps://en.wikipedia.org/wiki/Manchester_Mark_1
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invented to make computers smaller and less expensive
- speeds up to 10,000 calculations a secondhttps://en.wikipedia.org/wiki/Transistor -
computer chips
- replaced transistors
- fastest; millions of calculations a second
- silicon etched wit intricate circuits
https://en.wikipedia.org/wiki/Integrated_circuit -
first medium sized computer
- still expensive for corporations/ government only
- smaller & cheaper than anything before
- punched cards replaced by magnetic tape https://en.wikipedia.org/wiki/IBM_650 -
binary representation of a location in memory
https://en.wikipedia.org/wiki/Memory_address -
one of first computers with circuits
- difficulty keeping up with demand
- Cheaper so hospitals & universities could affordhttps://en.wikipedia.org/wiki/IBM_650 -
invented by Bill Gates
https://en.wikipedia.org/wiki/Category:BASIC_interpreters -
first microcomputer
https://en.wikipedia.org/wiki/Altair -
built by Stephen Wozniak & Steven Jobs in their garage
https://en.wikipedia.org/wiki/Apple_I -
additional devices (scanners/printers)
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Founded by Bill Gates
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had spreadsheets, accounting & word processing software (instant success)https://en.wikipedia.org/wiki/IBM_Personal_Computer
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Main circuit board
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performs specific tasks
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notebooks, tablets, handhelds and wearable computers
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permanent/basic operating instructions (not changed)https://en.wikipedia.org/wiki/ROM_image
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first electronic computer. used binary number system of 1's and 0's still used today
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most popular & growing touch screen small handheld computer
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wireless technology used to allow mobile computer devices to communicate https://en.wikipedia.org/wiki/Bluetooth
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Bill Gates
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temporary with current apps/documents (lost when off)
