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Nairi (computer)
The first Nairi ( hy, Նաիրի, russian: Наири) computer was developed and launched into production in 1964, at the Yerevan Research Institute of Mathematical Machines (Yerevan, Armenia), and were chiefly designed by Hrachya Ye. Hovsepyan. In 1965, a modified version called Nairi-M, and in 1967 versions called Nairi-S and Nairi-2, were developed. Nairi-3 and Nairi-3-1, which used integrated hybrid chips, were developed in 1970. These computers were used for a wide class of tasks in a variety of areas, including Mechanical Engineering and the Economics. In 1971, the developers of the Nairi computer were awarded the State Prize of the USSR. Nairi-1 The development of the machine began in 1962, completed in 1964. The chief designer is Hrachya Yesaevich Hovsepyan, the leading design engineer is Mikhail Artavazdovich Khachatryan. The architectural solution used in this machine has been patented in England, Japan, France and Italy. Specification * The processor is 36-bit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerevan Research Institute Of Mathematical Machines
The Yerevan Computer Research and Development Institute (YCRDI) ( hy, Երևանի մաթեմատիկական մեքենաների գիտահետազոտական ինստիտուտ (ԵրՄՄԳՀԻ) (''Yerevani mat'ematikakan mekenaneri gitahetazotakan institut (YerMMGHI)'')), is a scientific research institute and the pioneer of the IT and software industry in Armenia. It was founded by the government of USSR in 1956 in Yerevan for the development of computer equipment. The institution is currently involved in the development of computers and automatic control systems for civil and defense purposes. At the beginning of the 1990s, the institute employed over 7,000 staff. Products produced by the YCRDI include: * Measurement and control system for various utility distribution networks, such as electrical, natural gas, water, and thermal energy networks, for measurement, control, and management purposes. * Communication security systems for government agencies and commercial banks. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drum Memory
Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria. Drums were widely used in the 1950s and into the 1960s as computer memory. For many early computers, drum memory formed the main working memory of the computer. It was so common that these computers were often referred to as ''drum machines''. Some drums were also used as secondary storage as for example various IBM drum storage drives. Drums were displaced as primary computer memory by magnetic core memory, which offered a better balance of size, speed, cost, reliability and potential for further improvements. Drums in turn were replaced by hard disk drives for secondary storage, which were both less expensive and offered denser storage. The manufacturing of drums ceased in the 1970s. Technical design A drum memory or drum storage unit contained a large metal cylinder, coated on the outside surface with a ferromagnetic recording material. It could be considered the precu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minicomputers
A minicomputer, or colloquially mini, is a class of smaller general purpose computers that developed in the mid-1960s and sold at a much lower price than mainframe and mid-size computers from IBM and its direct competitors. In a 1970 survey, ''The New York Times'' suggested a consensus definition of a minicomputer as a machine costing less than (), with an input-output device such as a teleprinter and at least four thousand words of memory, that is capable of running programs in a higher level language, such as Fortran or BASIC. The class formed a distinct group with its own software architectures and operating systems. Minis were designed for control, instrumentation, human interaction, and communication switching as distinct from calculation and record keeping. Many were sold indirectly to original equipment manufacturers (OEMs) for final end use application. During the two decade lifetime of the minicomputer class (1965–1985), almost 100 companies formed and only a half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications In Armenia
Telecommunications in Armenia involves the availability and use of electronic devices and services, such as the telephone, television, radio or computer, for the purpose of communication. The various telecommunications systems found and used in Armenia includes radio, television, fixed and mobile telephones, and the internet. Mobile As of 2017, Armenia has 3.5 million mobile subscribers in total, and a 120% penetration rate. There are three mobile phone operators currently in Armenia: Viva Cell MTS, Ucom and Beeline. All three offer both 2G and 3G as well as 4G services. All three networks are widely modern and reliable with shops located in major towns and cities where one can purchase a sim card or get assistance if needed. Most unlocked mobile phones are able to be used on roaming however network charges apply. Ucom and Viva Cell MTS are often recommended to tourists due to the variety of tariffs available and the help available in a variety of languages. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Systems In The Soviet Union
The history of computing in the Soviet Union began in the late 1940s, when the country began to develop its Small Electronic Calculating Machine (MESM) at the Kiev Institute of Electrotechnology in Feofaniya. Initial ideological opposition to cybernetics in the Soviet Union was overcome by a Khrushchev era policy that encouraged computer production. By the early 1970s, the uncoordinated work of competing government ministries had left the Soviet computer industry in disarray. Due to lack of common standards for peripherals and lack of digital storage capacity the Soviet Union's technology significantly lagged behind the West's semiconductor industry. The Soviet government decided to abandon development of original computer designs and encouraged cloning of existing Western systems (e.g. the 1801 CPU series was scrapped in favor of the PDP-11 ISA by the early 80s). Soviet industry was unable to mass-produce computers to acceptable quality standards and locally manufactured cop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SM EVM
SM EVM (СМ ЭВМ, abbreviation of Система Малых ЭВМ—literally System of Mini Computers) are several types of Soviet and Comecon minicomputers produced from 1975 through the 1980s. Most types of SM EVM are clones of DEC PDP-11 and VAX. SM-1 and SM-2 are clones of Hewlett-Packard minicomputers. The common operating systems for the PDP-11 clones are translated versions of RSX-11 (ОС РВ) for the higher spec models and RT-11 (РАФОС, ФОДОС) for lower spec models. Also available for the high-end PDP-11 clones is MOS, a clone of UNIX. See also * SM-4 * SM-1420 The SM-1420 (CM-1420) is a 16 bit DEC PDP-11/45 minicomputer clone, and the successor to SM-4 in Soviet Bloc countries. Under the direction of Minpribor it was produced in the Soviet Union and Bulgaria from 1983 onwards, and is more than twice as f ... * SM-1600 * SM-1710 * SM-1720 References Computer-related introductions in 1975 Minicomputers Soviet computer systems PDP-11 {{m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDP-11 Architecture
The PDP-11 architecture is a CISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC). It is implemented by central processing units (CPUs) and microprocessors used in PDP-11 minicomputers. It was in wide use during the 1970s, but was eventually overshadowed by the more powerful VAX-11 architecture in the 1980s. Memory Data formats Sixteen-bit words are stored little-endian (with least significant bytes first). Thirty-two-bit data—supported as extensions to the basic architecture, e.g., floating point in the ''FPU Instruction Set'', double-words in the ''Extended Instruction Set'' or long data in the ''Commercial Instruction Set''—are stored in more than one format, including an unusual middle-endian format sometimes referred to as "PDP-endian". Memory management The PDP-11's 16-bit addresses can address 64 KB. By the time the PDP-11 yielded to the VAX, 8-bit bytes and hexadecimal notation were becoming standard in the industry; however, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Razdan Familiy Of Computers
Razdan may refer to: * Razdan (surname) *Hrazdan Hrazdan ( hy, wikt:Հրազդան, Հրազդան), is a town and urban municipal community in Armenia serving as the administrative centre of Kotayk Province, located northeast of the capital Yerevan. As of the 2011 census, the population of the ..., Armenia *Razdan Dam, Armenia * Razdan Stadium, Armenia See also * Hrazdan (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minsk Family Of Computers
''Minsk'' family of mainframe computers was developed and produced in the Byelorussian SSR from 1959 to 1975. Models The MINSK-1 was a vacuum-tube digital computer that went into production in 1960. The MINSK-2 was a solid-state digital computer that went into production in 1962. The MINSK-22 was a modified version of Minsk-2 that went into production in 1965. The MINSK-23 went into production in 1966. The most advanced model was ''Minsk-32'', developed in 1968. It supported COBOL, FORTRAN and ALGAMS (a version of ALGOL). This and earlier versions also used a machine-oriented language called ''AKI'' (''AvtoKod "Inzhener"'', i.e., " Engineer's Autocode"). It stood somewhere between the native assembly language ''SSK'' (''Sistema Simvolicheskogo Kodirovaniya'', or "System of symbolic coding") and higher-level languages, like FORTRAN. The word size was 31 bits for Minsk-1 and 37 bits for the other models. At one point the Minsk-222 (an upgraded prototype based on the most popu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Read-only Memory
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified after the manufacture of the memory device. Read-only memory is useful for storing software that is rarely changed during the life of the system, also known as firmware. Software applications (like video games) for programmable devices can be distributed as plug-in cartridges containing ROM. Strictly speaking, ''read-only memory'' refers to memory that is hard-wired, such as diode matrix or a mask ROM integrated circuit (IC), which cannot be electronically changed after manufacture. Although discrete circuits can be altered in principle, through the addition of bodge wires and/or the removal or replacement of components, ICs cannot. Correction of errors, or updates to the software, require new devices to be manufactured and to replace the installed device. Floating-gate ROM semiconductor memory in the form of erasab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
