ENIAC is generally acknowledged to be the first successful high-speed electronic digital computer EDC and was productively used from to A controversy developed in , however, over the patentability of ENIAC's basic digital concepts, the claim being made that another U.
Atanasoff, had already used the same ideas in a simpler vacuum-tube device he built in the s while at Iowa State College. In , the court found in favor of the company using Atanasoff claim and Atanasoff received the acclaim he rightly deserved. The computer operated like many computers today utilizing windows , menus , and icons as an interface to its operating system. Intel introduces the first microprocessor, the Intel , on November 15, Considered as the first microcomputer, it used the Intel processor and was the first commercial non-assembly computer.
In , Ed Roberts coined the term "personal computer" when he introduced the Altair The computer relied on a series of switches for inputting data and output data by turning on and off a series of lights. The IBM is the first portable computer, which was released in September The computer weighed pounds and had a five-inch CRT display, tape drive , 1.
The first truly portable computer or laptop is considered to be the Osborne I , which was released in April and developed by Adam Osborne. The Osborne I weighed The computer kit was developed by Steve Wozniak in and contained a 8-bit processor and 4 kb of memory, which was expandable to 8 or 48 kb using expansion cards. Although the Apple I had a fully assembled circuit board, the kit required a power supply , display , keyboard , and case to be operational. Below is a picture of an Apple I from an advertisement by Apple.
The computer was code-named Acorn. When was the first computer invented? Note Early inventions that lead up to the computer, such as the abacus , astrolabe, slide rule , clocks, calculator , and tablet machines, are not accounted for on this page. When was the word "computer" first used? First mechanical computer or automatic computing engine concept.
First general-purpose computer. The first machine to record and store information. First programmable computer. First concepts of what we consider a modern computer. The first electric programmable computer. The first digital computer. The first stored program computer. The first computer company. First computer with a program stored in memory. First commercial computer. IBM's first computer. The first computer with RAM. The first transistor computer. The first minicomputer. The first desktop and mass-market computer.
Thomas Johnson Watson Jr. Kilby was awarded the Nobel Prize in Physics in for his work. This marks the evolution of the computer from a specialized machine for scientists and mathematicians to technology that is more accessible to the general public.
Written in the C programming language, UNIX was portable across multiple platforms and became the operating system of choice among mainframes at large companies and government entities. Due to the slow nature of the system, it never quite gained traction among home PC users. On April 4, after the success of this first endeavor, the two childhood friends form their own software company, Microsoft.
It sold like crazy. For the first time, non-geeks could write programs and make a computer do what they wished. It offers color graphics and incorporates an audio cassette drive for storage. I was the technical brains — I figured out how to do it, and did it, and documented it. It has an Intel chip, two floppy disks and an optional color monitor.
It also popularizes the term PC. It also features a drop-down menu and icons.
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