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The first Mechanical Calculater
The first mechanical calculater was invented by Blaise Pascal to help his father add large sums. The machine had a lot of buttons. -
The first Mechanical Computer
The first Mechanical computer was invented by Charcle Babbage to do polynominal by the method of differances. It could fill up a whole room -
The first Digital Computer
The first Digital computer was invented by John Atanasoff it had all the same components as a electronic computer -
The first Electronic Computer
The first Electronic computer was invented by John Antanasoff. It had a bianary number instead of a the traditional base 10 numbers -
The first Programmable Computer
The first Proggramable computer was invented by Konrad Zuse. It had a keyboard and flashing lights -
The first Stored Program Computer
The first Stored Program computer was invented by Chris Burton and others. The lenth wa s17 ft, the height was 7ft 4in, and it weighed 1 ton. It was called the SSEM -
The first Transistor Computer
The first Transistor Computer was invented by Bell labs. It had 92 contract transistors, and 550 diodes. It changed all circiyts to reliable junction transistors. It was called the TRADIAC -
The first Personal Computer
John Lentz invented the first Personal computer. It was controlled froma keyboard. It had a control panel. It was programed by a punched paper tape which duplicared itself in order to perform extra passes to the code. It was called 610 -
The first Minicomputer
The first minicomputer was invente dby DEC in the United States. It was made with an automatic wire wrapped backplane. which made it cheaper to buy.It was called the DEC PDP-b minicomputer -
The first Laptop
The first Laptop was invented by William Moggridge. It was used by NASA on the space shuttle program. It was a 340K byte bubble memory laptop computer with die case magnesium -
The first PC
The first PC was invented by Don Estridge and other engineers. It was called the IBM 5150. It was designed for proffessional and scientific proble solvers not buisness men and hobbyist. They built it with "off the shelf parts" meaning different parts from different things -
The first Apple Computer
The first Apple Computer wsas invented by Apple. The cost of it was around $2495. It had a 9in monochrome screen. The first one went bad but 8 months later they released a new updated version. -
Present Day Computers
Present day computers have touch screens smaller hard drive, updated keyboards. The known computer inventors are Dell, Apple, Toshiba, and HP
