33 relations: Atanasoff–Berry computer, Austria, Auxiliary memory, Berkeley Software Distribution, CAB500, Capacitance, Carousel memory, Computer memory, Data storage, Disk read-and-write head, Engineering Research Associates, English Electric DEUCE, Ferromagnetism, Gustav Tauschek, Hard disk drive, Hard disk drive performance characteristics, IBM 650, Interleaving (disk storage), Karlqvist gap, LGM-30 Minuteman, LGP-30, Magnetic-core memory, Manchester Mark 1, Optimum programming, PDP-11, Random-access memory, Rapid Execution and Combat Targeting System, The Story of Mel, UNIVAC, UNIVAC FASTRAND, Unix, Virtual memory, Wisconsin Integrally Synchronized Computer.
The Atanasoff–Berry Computer (ABC) was the first automatic electronic digital computer, an early electronic digital computing device that has remained somewhat obscure.
Austria (Österreich), officially the Republic of Austria (Republik Österreich), is a federal republic and a landlocked country of over 8.8 million people in Central Europe.
Auxiliary memory, also known as auxiliary storage, secondary storage, secondary memory or external memory, is a non-volatile memory (does not lose stored data when the device is powered down) that is not directly accessible by the CPU, because it is not accessed via the input/output channels (it is an external device).
Berkeley Software Distribution (BSD) was a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995.
The CAB500 was a French transistor-based drum computer, designed at SEA around 1957 by Alice Recoque.
Capacitance is the ratio of the change in an electric charge in a system to the corresponding change in its electric potential.
Carousel memory is a type of secondary storage for computers, which was created by Swedish computer engineers and Gunnar Stenudd.
In computing, memory refers to the computer hardware integrated circuits that store information for immediate use in a computer; it is synonymous with the term "primary storage".
Data storage is the recording (storing) of information (data) in a storage medium.
Disk read/write heads are the small parts of a disk drive which move above the disk platter and transform the platter's magnetic field into electrical current (read the disk) or, vice versa, transform electrical current into magnetic field (write the disk).
Engineering Research Associates, commonly known as ERA, was a pioneering computer firm from the 1950s.
The DEUCE (Digital Electronic Universal Computing Engine) was one of the earliest British commercially available computers, built by English Electric from 1955.
Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
Gustav Tauschek (April 29, 1899, Vienna, Austria – February 14, 1945, Zürich, Switzerland) was an Austrian pioneer of Information technology and developed numerous improvements for punched card-based calculating machines from 1922 to 1945.
A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.
Higher performance in hard disk drives comes from devices which have better performance characteristics.
The IBM 650 Magnetic Drum Data-Processing Machine is one of IBM's early computers, and the world’s first mass-produced computer.
In disk storage and drum memory, interleaving is a technique used to improve access performance to storage by putting data accessed sequentially into non-sequential sectors.
The Karlqvist gap or Karlqvist Field is an electromagnetic phenomenon discovered in 1953 by the Swedish engineer Olle Karlqvist (1922-1976) which is important in magnetic storage for computers.
The LGM-30 Minuteman is a U.S. land-based intercontinental ballistic missile (ICBM), in service with the Air Force Global Strike Command.
The LGP-30, standing for Librascope General Purpose and then Librascope General Precision, was an early off-the-shelf computer.
Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975.
The Manchester Mark 1 was one of the earliest stored-program computers, developed at the Victoria University of Manchester from the Manchester Baby (operational in June 1948).
In the history of computing, optimum programming is the practice of arranging a computer program's instructions in memory so as to minimize the time the machine spends waiting for instructions.
The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a succession of products in the PDP series.
Random-access memory (RAM) is a form of computer data storage that stores data and machine code currently being used.
The United States Air Force's Rapid Execution and Combat Targeting System (REACT) is a modification of the LGM-30 Minuteman launch control centers (LCC's) that provides continual monitoring and rapid retargeting of Minuteman ICBMs.
The Story of Mel is an archetypical piece of computer programming folklore.
UNIVAC (Universal Automatic Computer) is a line of electronic digital stored-program computers starting with the products of the Eckert–Mauchly Computer Corporation.
FASTRAND was a magnetic drum mass storage system built by Sperry Rand Corporation (later Sperry Univac) for their UNIVAC 1100 series and 490/494 series computers.
Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
In computing, virtual memory (also virtual storage) is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very large (main) memory." The computer's operating system, using a combination of hardware and software, maps memory addresses used by a program, called virtual addresses, into physical addresses in computer memory.
The Wisconsin Integrally Synchronized Computer (WISC) was an early digital computer designed and built at the University of Wisconsin–Madison.