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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
After the "computer-on-a-chip" was commercialized, the cost to produce a computer system dropped dramatically. The arithmetic, logic, and control functions that previously occupied several costly circuit boards were now available in one integrated circuit which was very expensive to design but cheap to produce in large quantities.
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
Historical lowest retail price of computer memory and storage Electromechanical memory used in the IBM 602, an early punch multiplying calculator Detail of the back of a section of ENIAC, showing vacuum tubes Williams tube used as memory in the IAS computer c. 1951 8 GB microSDHC card on top of 8 bytes of magnetic-core memory (1 core is 1 bit.)
It was announced in 1956 with the then new IBM 305 RAMAC computer. [8] A variant, the IBM 355 Disk File, was simultaneously announced with the IBM RAM 650 computer, [9] an enhancement to the IBM 650. The IBM 350 drive had fifty 24-inch (0.6 m) platters, with a total capacity of five million 6-bit characters (3.75 megabytes). [10]
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
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.