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Pascaline
Only performed addition (never worked) invented by Blaise Pascal (mathematician) -
Stepped reckener
Firs add, subtract, multiply, divide & square roots (malfunctioned parts - ahead of it's time)https://en.wikipedia.org/wiki/Stepped_reckoner -
Difference Engine
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 -
analytical engine
followed programs on punched cards & disigned to make decisions based on programs (never finished)https://en.wikipedia.org/wiki/Analytical_Engine -
ENIAC
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 -
Mark 1
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 -
transistor
invented to make computers smaller and less expensive
- speeds up to 10,000 calculations a secondhttps://en.wikipedia.org/wiki/Transistor -
Integrated Circuits
computer chips
- replaced transistors
- fastest; millions of calculations a second
- silicon etched wit intricate circuits
https://en.wikipedia.org/wiki/Integrated_circuit -
IBM Model 650
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 -
memory address
binary representation of a location in memory
https://en.wikipedia.org/wiki/Memory_address -
IBM System 360
one of first computers with circuits
- difficulty keeping up with demand
- Cheaper so hospitals & universities could affordhttps://en.wikipedia.org/wiki/IBM_650 -
BASIC language interpreter
invented by Bill Gates
https://en.wikipedia.org/wiki/Category:BASIC_interpreters -
Altair
first microcomputer
https://en.wikipedia.org/wiki/Altair -
First apple computer
built by Stephen Wozniak & Steven Jobs in their garage
https://en.wikipedia.org/wiki/Apple_I -
Periipheral devices
additional devices (scanners/printers) -
Founded Microsoft
Founded by Bill Gates -
IBM-PC
had spreadsheets, accounting & word processing software (instant success)https://en.wikipedia.org/wiki/IBM_Personal_Computer -
motherboard
Main circuit board -
Application software
performs specific tasks -
mobile computing devices
notebooks, tablets, handhelds and wearable computers -
ROM (read only memory)
permanent/basic operating instructions (not changed)https://en.wikipedia.org/wiki/ROM_image -
ABC
first electronic computer. used binary number system of 1's and 0's still used today -
smartphone
most popular & growing touch screen small handheld computer -
bluetooth
wireless technology used to allow mobile computer devices to communicate https://en.wikipedia.org/wiki/Bluetooth -
Developed MS-DOS for PCs and Windows
Bill Gates -
RAM random access memory
temporary with current apps/documents (lost when off)
