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Mechanical Device (Pascaline)
Invented by mathematician Blaise Pascal, the device only performed addition but it never worked. -
Mechanical Device (Stepped Reckener)
(Leibniz) first add, subtract, multiply, divide & square roots (malfunctioned parts – ahead of it’s time) -
Mechanical Device (Difference Engine)
Made for Navigation ships (lost at sea) – never built but led to Analytical Engine. -
(Mechanical Device) Analytical Engine
followed programs on punched cards (still do today) they were designed to make decisions based on programs (larger of 2 nums) – never built but model for today -
HP Company
Known as the Hewlett Packard Company, Bill Hewlett and Dave Packard graduated with degrees in electrical engineering from Stanford University in 1935. The company originated in a garage in nearby Palo Alto during a fellowship they had with a past professor, Frederick Terman at Stanford during the Great Depression. -
First Generation Computer (Atanasoff Berry Computer)
ABC (first electronic computer) used binary number system of 1s and 0s still used today (wasn’t recognized until the 1990s) -
Electro Mechanical Device (Mark I)
– IBM – Used punch cards – but could not make decisions so it's still a calculator (sophisticated) but 51 feet in length and weighed 5 tons -
First Generation Computer (ENIAC)
made for WWII trajectory of shells but finished after war was over
–Solved problem that team of mathematicians needed three days in twenty seconds!
–30 tons & 1500 sq ft (average home) -
Second Generation Computer (Transistor)
invented to make computers smaller and less expensive
Speeds up to 10,000 calculations per second -
Stored Program Computer (EDSAC)
created by John Von Neumann solved problems with instructions on paper tape. -
Stored Computer Program (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
1000 calculations per second -
Third Generation Computer (IBM System 360)
IBM System 360 one of first computers with circuits
-Difficulty keeping up with demand
-Cheaper so hospitals & universities could afford -
Second Generation Computer (IBM Model 650)
first medium-sized computer
Still expensive for corporations/government only
Smaller & Cheaper than anything before
Punched cards replaced by magnetic tape -
Fourth Generation Computer (Altair)
first Microcomputer. -
Fourth Generation Computer (Apple)
Stephen Wozniak & Steven Jobs built Apple computer in their garage -
Fourth Generation Computer (IBM-PC)
had spreadsheet, accounting & word processing software (instant success)
-Available to all -
Turbo PC (Dell)
sold for $795containing an Intel 8088-compatible processor running at a speed of 8 MHz. PC's Limited advertised the systems in national computer magazines for sale directly to consumers, and custom assembled each ordered unit according to a selection of options. -
Apple (Ipods)
iPod is a line of portable media players and multi-purpose pocket computers designed and marketed by Apple Inc. The first line was released on October 23, 2001, about 8½ months after iTunes (Macintosh version) was released. -
Alienware (Dell)
Alienware was founded in 1996 by Nelson Gonzalez and Alex Aguila. Their hardware is designed for gaming purposes and has changed in physical appearance over the years. The company's products are best known by their science fiction themed designs. Dell purchased the company March 22, 2006 -
Apple Air
was designed to balance both performance and portability, consisting of a full-sized keyboard design, a machined casing made of aluminum, and a very light and thin structure.
