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First commercial computers from SEA. 22-bit serial computers with diode logic and both core and drum memory. UNIVAC 1102: 1954 3: A variation of the UNIVAC 1101 built for the US Air Force. Zuse Z22: 1955 55: An early commercial computer. IBM 305 RAMAC: 1956 >1,000: The first commercial computer to use a moving-head hard-disk drive for secondary ...
On October 25, 2012 (), The YouTube slogan (Broadcast Yourself) was taken down due to the live stream of the U.S. presidential debate. In October 2012, YouTube introduced the ability to add a translucent and overlayed custom icon at a corner of all own videos, which can link to the channel page or a specified video.
The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. [75] Program code and data were stored on punched film . It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers .
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
[25] During her work with Babbage, Ada Lovelace became the designer of the first computer algorithm, which could compute Bernoulli numbers, [26] although this is arguable as Charles was the first to design the difference engine and consequently its corresponding difference based algorithms, making him the first computer algorithm designer.
The Atanasoff–Berry computer (ABC) was the first automatic electronic digital computer. [1] The device was limited by the technology of the day. The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete. [2]
The machine contained 4,050 valves and had a power consumption of 25 kilowatts. [16] To increase reliability, purpose-built CRTs made by GEC were used in the machine instead of the standard devices used in the Baby. [1] The Baby's 32-bit word length was increased to 40 bits. Each word could hold either one 40-bit number or two 20-bit program ...
The Computer History Museum claims to house the largest and most significant collection of computing artifacts in the world. [a] This includes many rare or one-of-a-kind objects such as a Cray-1 supercomputer as well as a Cray-2, Cray-3, the Utah teapot, the 1969 Neiman Marcus Kitchen Computer, an Apple I, and an example of the first generation of Google's racks of custom-designed web servers. [7]