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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.
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 ...
This had 60 50-bit words of memory in the form of capacitors (with refresh circuits—the first regenerative memory) mounted on two revolving drums. The clock speed was 60 Hz, and an addition took 1 second. For secondary memory it used punched cards, moved around by the user. The holes were not actually punched in the cards, but burned.
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
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 ...
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
Date Event January 4 Linux kernel version 2.4.0 released. February 1 Foundation of the newco Loquendo as a spin-off of the CSELT's voice technology group.: February The Agile Manifesto, which crystallised and named a growing trend towards more "agile" processes in software development, was released.
The Spectrum sold with two memory options, a 16 KB version for £125 or a 48 KB version for £175. May 1982 US IBM launch the double-sided 320 KB floppy disk drive. July 1982 UK US Timex/Sinclair introduced the first computer touted to cost under $100 marketed in the U.S., the Timex Sinclair 1000. In spite of the flaws in the early versions ...