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the Intel 4004 CPU. A fully expanded system could support 16 Intel 4001s for a total of 4 kB of ROM, 16 Intel 4002s for a total of 1,280 nibbles (640 bytes) of RAM, and an unlimited number of 4003s. The 4003s were connected to programmable input and output pins on the 4001 and to output pins on the 4002, not directly to the CPU. [8]
In 1956, a research team led by Johnson developed disk data storage technology, which IBM released as the IBM 305 RAMAC. Although the first disk drive was crude by modern standards, it launched a multibillion-dollar industry. Johnson was working with Sony on another project when he developed the prototype for a half-inch videocassette tape.
Ajay V. Bhatt [4] is an Indian-American computer architect who produced several widely used technologies, including USB (Universal Serial Bus), Platform Power Management architecture, and various chipset.
The first commercial microprocessor, the binary-coded decimal (BCD) based Intel 4004, was released by Intel in 1971. [1] [2] In March 1972, Intel introduced a microprocessor with an 8-bit architecture, the 8008, an integrated pMOS logic re-implementation of the transistor–transistor logic (TTL) based Datapoint 2200 CPU.
The first Compaq PC was sketched out on a placemat by Ted Papajohn while dining with the founders in a pie shop, [16] [18] (named House of Pies in Houston). Their first venture capital came from Benjamin M. Rosen and Sevin Rosen Funds, who helped the fledgling company secure $1.5 million to produce their initial computer. [19]
The Lisa was one of the first personal computers with a graphical user interface (GUI) that was sold commercially. It ran on the Motorola 68000 CPU and used both dual floppy disk drives and a 5 MB hard drive for storage. The machine also had 1MB of RAM used for running software from disk without rereading the disk persistently. [72]
Konrad Zuse was born in Berlin on 22 June 1910. [21] In 1912, his family moved to East Prussian Braunsberg (now Braniewo in Poland), where his father was a postal clerk.Zuse attended the Collegium Hosianum in Braunsberg, and in 1923, the family moved to Hoyerswerda, where he passed his Abitur in 1928, qualifying him to enter university.
A payroll system was run on Lyons Electronic Office (LEO) a computer system designed by Maurice Wilkes who had previously worked on EDSAC. Sep 1951: UK The oldest known recordings of computer generated music were played by the Ferranti Mark 1 computer. The Mark 1 is a commercial version of the Manchester Mark 1 machine from the University of ...