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Pasacline
Blaise Pascal invented the Pascaline only performed addition ,but it never worked.
https://en.wikipedia.org/wiki/Pascal%27s_calculator -
Stepped Reckener
Gottfried Wilhelm Leibniz made this. It could add, subtract, multiply, divide & square roots (malfunctioned parts – ahead of it’s time)
https://en.wikipedia.org/wiki/Stepped_Reckoner -
Ada Byron
first programmer & stated no computer no matter how powerful could ever think which is still true today
https://en.wikipedia.org/wiki/Ada_Lovelace -
Analytical Engine
This followed programs on punched cards and designed to make decisions based on programs. This was never built
https://en.wikipedia.org/wiki/Analytical_Engine -
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John Von Neumann
Idea of stored program in CPU to control all functions
https://en.wikipedia.org/wiki/John_von_Neumann -
Grace Murray Hopper
(made COBOL) used “debug” to remove a moth – still used today
https://en.wikipedia.org/wiki/Grace_Hopper -
ENIAC
made for WWII trajectory of shells but finished after war was over
https://en.wikipedia.org/wiki/ENIAC -
Transistor
invented to make computers smaller and less expensive
https://en.wikipedia.org/wiki/Transistor -
Integrated Circuits (ICs) – Computer Chips
Replaced transistors
Fastest; Millions of calculations per second
Silicon etched with intricate circuits
https://en.wikipedia.org/wiki/Integrated_circuit -
Machine Language
0’s & 1’s is the only language that a computer understands (low-level)
Written directly to address hardware
Very complex & tedious
https://en.wikipedia.org/wiki/Machine_code -
UNIVAC
used stored program concept correctly & first computer language (C-10) with first keyboard
Sold to Census Bureau in 1951
Still large and expensive – only large corporations & government could afford
https://en.wikipedia.org/wiki/UNIVAC
1000 calculations per second -
Bill Gates
Created a BASIC language interpreter (1975)
Founded Microsoft (1977)
Developed MS-DOS for PCs and Windows
https://en.wikipedia.org/wiki/Bill_Gates -
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 -
Mainframe
Large & Expensive ($100,000-millions range)
Large corporations, banks, governments & universities
Usually has ‘dummy’ terminals
Usually requires their own room
IBM System 360 was one of first
https://en.wikipedia.org/wiki/Mainframe_computer -
Desktop Computer
Has a monitor, keyboard, mouse, disk drives
Takes information in and sends information out/
Has a Central Processing Unit that processes data and controls flow of data & directs all activities of the computer
https://en.wikipedia.org/wiki/Desktop_computer -
Microprocessor
Made by Marcian Hoff, 1970
Entire CPU on a chip
Made Microcomputers (computer small enough to fit on a desktop) possible
https://en.wikipedia.org/wiki/Microprocessor -
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Bluetooth
wireless technology used to allow mobile computer devices to communicate
https://en.wikipedia.org/wiki/Bluetooth -
first Apple Iphone
first iphone ever made by Apple
https://en.wikipedia.org/wiki/IPhone_(1st_generation)
