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Calculating Machines
Blaise Pascal invented the first calculating machine, -
First Mechanical Computer
In 1822, Charles Babbage conseptualised and began developing the Difference Engine, considered to be the first automatic computing machine that was capable of computing several sets of numbers and making hard copies of the results. -
Analytical Engine
Charles Babbage proposed the first general mechanical computer, the Analytical Engine. This engine contained and Arthimetic Logic Unit, basic flow control, and integrated memory and is the first general-purpose computer concept. -
The Turing Machine
The Turing Machine was first proposed by Alan Turing in 1936 and became the foundation for theories about computing and computers. The machine was a device that printed symbols on paper tape in a manner that emulated a person following a series of logical instructions. Without these fundamentals, we wouldn't have the computers we use today. -
The First Digital Computer
The ABC, short for Atanasoff-Berry Computer started being developed by Professer John Vincent Atanasoff and graduate student Cliff Berry. and continued to be developed unti l1942. It is an electronic computer that used vacuum tubes for digital computation. Many consider that the ENIAC was the first digital computer because it was fully functional. -
First Commercial Computer
In 1942, Konrad Zuse began working on the Z4, which later was the first commercial computer after being sold to Eduard Stiefel. -
The First PC
IBM publicly introduced the 701, its first electric computer and first mass produced computer. -
The First Personal Computer
In 1975, Ed Roberts came up with the term "personal computer" when he introduced the Altair 8800. Although the first personal computer is considered by many to be the KENBAK-1, which was first introduced for $750 in 1971. The computer relied on a series of switches for inputting data and output data by turning on and off a series of lights.
The Micral is considered the be the first commercial non-assembly computer. The computer used the Intel 8008 processor and sold for $1,750 in 1973. -
The First Laptop/Portable Computer
The IBM 5100 is the first portable computer, which was released on September 1975.The computer weighed 55 pounds. The first truly portable computer or laptop is considered to be the Osborne I, which was released on April 1981 and developed by Adam Osborne. -
The First Apple Computer
Steve Wozniak designed the first Apple, known as the Apple I, in 1976. -
The First PC Clone
The Compaq Portable is considered to be the first PC clone and was release in March 1983 by Compaq. The Compaq Portable was 100% compatible with IBM computers and was capable of running any software developed for IBM computers.
