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SEAC (Standards Eastern Automatic Computer) demonstrated at US NBS in Washington, DC – was the first fully functional stored-program computer in the U.S. May 1950: UK The Pilot ACE computer, with 800 vacuum tubes, and mercury delay lines for its main memory, became operational on 10 May 1950 at the National Physical Laboratory near London.
CSIR Mk I (later known as CSIRAC), Australia's first computer, ran its first test program. It was a vacuum-tube-based electronic general-purpose computer. Its main memory stored data as a series of acoustic pulses in 5 ft (1.5 m) long tubes filled with mercury. 1949 United Kingdom
The second-generation computer architectures initially varied; they included character-based decimal computers, sign-magnitude decimal computers with a 10-digit word, sign-magnitude binary computers, and ones' complement binary computers, although Philco, RCA, and Honeywell, for example, had some computers that were character-based binary ...
The Computer History in time and space, Graphing Project, an attempt to build a graphical image of computer history, in particular operating systems. The Computer Revolution/Timeline at Wikibooks "File:Timeline.pdf - Engineering and Technology History Wiki" (PDF). ethw.org. 2012. Archived (PDF) from the original on 2017-10-31
Timeline of computing hardware before 1950; Timeline of computing 1950–1979; Timeline of computing 1980–1989; Timeline of computing 1990–1999; Timeline of computing 2000–2009; Timeline of computing 2010–2019; Timeline of computing 2020–present
Modern computer memory is implemented as semiconductor memory, [5] [6] where data is stored within memory cells built from MOS transistors and other components on an integrated circuit. [7] There are two main kinds of semiconductor memory: volatile and non-volatile. Examples of non-volatile memory are flash memory and ROM, PROM, EPROM, and ...
The first mass-produced computer, the IBM 650, also announced in 1953 had about 8.5 kilobytes of drum memory. Magnetic-core memory patented in 1949 [138] with its first usage demonstrated for the Whirlwind computer in August 1953. [139] Commercialization followed quickly.
HAL Computer Systems: 101–118 MHz 64 400 nm - 1995 Pentium Pro: Intel: 150–200 MHz 32 350 nm: 5.5 1996 Alpha 21164A: DEC: 400–500 MHz 64 350 nm 9.7 1995 S/390 G3: IBM - 32 - 1996 K5: AMD: 75–100 MHz 32 500 nm 4.3 1996 R10000: MTI: 150–250 MHz 64 350 nm 6.7 1996 R5000: QED: 180–250 MHz - 350 nm 3.7 1996 SPARC64 II: HAL Computer ...