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ES PEVM
ES PEVM (ЕС ПЭВМ) was a Soviet clone of the IBM PC in 1980s. The ES PEVM models lineup also included analogues of IBM PC XT, IBM PC AT, IBM XT/370. The computers and software were adapted in Minsk, Belarus, at the Scientific Research Institute of Electronic Computer Machines (НИИ ЭВМ). They were manufactured in Minsk as well, at Minsk Production Group for Computing Machinery (Минское производственное объединение вычислительной техники (МПО ВТ)). Description The first models of ES PEVM (ES-1840, ES-1841, ES-1842), unlike the IBM PC, had two units: a system unit and a floppy drives unit. These models used a backplane instead of the main board. Although the system bus was compatible with ISA bus, it used a different type of connector, so the IBM PC expansion cards could not be installed in ES PEVM. Later models (ES-1843, ES-1849 etc.) were fully compatible with IBM PC XT and IBM PC AT. Unlike IBM PC u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Personal Computer
A personal computer (PC) is a multi-purpose microcomputer whose size, capabilities, and price make it feasible for individual use. Personal computers are intended to be operated directly by an end user, rather than by a computer expert or technician. Unlike large, costly minicomputers and mainframes, time-sharing by many people at the same time is not used with personal computers. Primarily in the late 1970s and 1980s, the term home computer was also used. Institutional or corporate computer owners in the 1960s had to write their own programs to do any useful work with the machines. While personal computer users may develop their own applications, usually these systems run commercial software, free-of-charge software ("freeware"), which is most often proprietary, or free and open-source software, which is provided in "ready-to-run", or binary, form. Software for personal computers is typically developed and distributed independently from the hardware or operating system ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
K1810VM86
The K1810VM86 (russian: К1810ВМ86, italic=yes) is a Soviet 16-bit microprocessor, a clone of the Intel 8086 CPU with which it is binary and pin compatible. It was developed between 1982 and 1985. The original K1810VM86 supported a clock frequency of up to 5 MHz while up to 8 MHz were allowed for the later K1810VM86M (''К1810ВМ86M''; corresponding to Intel 8086-2). The K1810VM86 was manufactured plastic 40-pin dual in-line package (as KR1810VM86 / ''КР1810ВМ86'') or in a 40-pin ceramic dual in-line package (as KM1810VM86 / ''КМ1810ВМ86'' for the commercial version or M1810VM86 / ''М1810ВМ86'' for the military version). A clone of the related Intel 8088 with its 8-bit bus was manufactured as the K1810VM88 (russian: К1810ВМ88, italic=yes), also in plastic and ceramic packages. Technology and support chips The K1810VM86 was manufactured with an n-MOS process. The family consists of the following chips: For brevity, the table above lists only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Code Page (Russian)
The Main code page (russian: Основная кодировка) is an 8-bit code page used in DOS. It was devised in 1986 by a research group at the Academy of Science of the USSR. Брябрин В. М., Ландау И. Я., Неменман М. ЕО системе кодирования для персональных ЭВМ// Микропроцессорные средства и системы. — 1986. — № 4. — С. 61—64. The other code page by the same group is known as the " Alternative code page" (russian: Альтернативная кодировка) which is nearly identical to code page 866. Unlike the latter, the "Main code page" does not preserve the code points of the pseudographic symbols of code page 437. However, the majority of software at that period were made to be compatible with code page 437, as a result the Main code page has never gained any wide use. With the introduction of the Russian version of MS-DOS in 1990 which by default uses code page ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CHDIR
The command, also known as (change directory), is a command-line shell command used to change the current working directory in various operating systems. It can be used in shell scripts and batch files. Implementations The command has been implemented in operating systems such as Unix, DOS, IBM OS/2, MetaComCo TRIPOS, AmigaOS (where if a bare path is given, cd is ''implied''), Microsoft Windows, ReactOS, and Linux. On MS-DOS, it is available in versions 2 and later. DR DOS 6.0 also includes an implementation of the and commands. The command is also available in the open source MS-DOS emulator DOSBox and in the EFI shell. It is named in HP MPE/iX. The command is analogous to the Stratus OpenVOS command. is frequently included built directly into a command-line interpreter. This is the case in most of the Unix shells ( Bourne shell, tcsh, bash, etc.), cmd.exe on Microsoft Windows NT/2000+ and Windows PowerShell on Windows 7+ and COMMAND.COM on DOS/ Microsoft Wind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Command (computing)
In computing, a command is a directive to a computer program to perform a specific task. It may be issued via a command-line interface, such as a shell, or as input to a network service as part of a network protocol, or as an event in a graphical user interface triggered by the user selecting an option in a menu. Specifically, the term ''command'' is used in imperative computer languages. The name arises because statements in these languages are usually written in a manner similar to the imperative mood used in many natural languages. If one views a statement in an imperative language as being like a sentence in a natural language, then a command is generally like a verb in such a language. Many programs allow specially formatted arguments, known as flags or options, which modify the default behaviour of the program, while further arguments may provide objects, such as files, to act on. As an analogy to a natural language, the flags are adverbs, while the other arguments are o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC DOS
PC or pc may refer to: Arts and entertainment * Player character or playable character, a fictional character controlled by a human player, usually in role-playing games or computer games * ''Port Charles'', an American daytime TV soap opera * Production code number, a designation used to identify television episodes * ''Pretty Cure'', a Japanese anime franchise Business and finance * Percentage (pc), numeric ratio signifier * Prime cost or variable cost * Principal Consultant, a management consulting position * Professional corporation, a type of corporate entity for licensed professionals (attorneys, architects, physicians, engineers, etc.) Organizations Businesses * Pearl-Continental Hotels & Resorts, a hotel chain in Pakistan * Pirelli & C. (stock symbol: PC) * President's Choice, a private label product brand of the Canadian supermarket chain Loblaw Companies ** PC Mobile, a Canadian mobile virtual network operator ** PC Optimum, a Canadian rewards program ** President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MS-DOS
MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system). MS-DOS was the main operating system for IBM PC compatibles during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system. IBM licensed and re-released it in 1981 as PC DOS 1.0 for use in its PCs. Although MS-DOS and PC DOS were initially developed in parallel by Microsoft and IBM, the two products diverged after twelve years, in 1993, with recognizable differences in compatibility, syntax, and capabilities. Beginning in 1988 with DR-DO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BIOS
In computing, BIOS (, ; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). The BIOS firmware comes pre-installed on an IBM PC or IBM PC compatible's system board and exists in some UEFI-based systems to maintain compatibility with operating systems that do not support UEFI native operation. The name originates from the Basic Input/Output System used in the CP/M operating system in 1975. The BIOS originally proprietary to the IBM PC has been reverse engineered by some companies (such as Phoenix Technologies) looking to create compatible systems. The interface of that original system serves as a ''de facto'' standard. The BIOS in modern PCs initializes and tests the system hardware components (Power-on self-test), and loads a boot loader from a mass storage device which then i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COM Port
COM (communication port) is the original, yet still common, name of the serial port interface on PC-compatible computers. It can refer not only to physical ports, but also to emulated ports, such as ports created by Bluetooth or USB adapters. History The name for the COM port started with the original IBM PC. IBM had called the four well-defined communication RS-232 ports the "COM" ports, starting from COM1 through COM4. In BASICA and PC DOS you can open these ports as "COM1:" through "COM4:", and all PC compatibles using MSDOS used the same denotation. Most PC-compatible computers in the 1980s and 1990s had one or two COM ports. By 2007, most computers shipped with only one or no physical COM ports. Today few consumer-grade PC-compatible computers include COM ports, though some of them do still include a COM header on the motherboard. After the RS-232 COM port was removed from most consumer-grade computers, an external USB-to-UART serial adapter cable was used to compen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Graphics Adapter
The Color Graphics Adapter (CGA), originally also called the ''Color/Graphics Adapter'' or ''IBM Color/Graphics Monitor Adapter'', introduced in 1981, was IBM's first color graphics card for the IBM PC and established a de facto computer display standard. Hardware design The original IBM CGA graphics card was built around the Motorola 6845 display controller, came with 16 kilobytes of video memory built in, and featured several graphics and text modes. The highest display resolution of any mode was 640×200, and the highest color depth supported was 4-bit (16 colors). The CGA card could be connected either to a direct-drive CRT monitor using a 4-bit digital (TTL) RGBI interface, such as the IBM 5153 color display, or to an NTSC-compatible television or composite video monitor via an RCA connector. The RCA connector provided only baseband video, so to connect the CGA card to a television set without a composite video input required a separate RF modulator. IBM pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MC6845
The Motorola 6845, or MC6845, is a display controller that was widely used in 8-bit computers during the 1980s. Originally intended for designs based on the Motorola 6800 CPU and given a related part number, it was more widely used alongside various other processors, and was most commonly found in machines based on the Zilog Z80 and MOS 6502. The 6845 is not an entire display solution on its own; the chip's main function is to properly time access to the display memory, and to calculate the memory address of the next portion to be drawn. Other circuitry in the machine then uses the address provided by the 6845 to fetch the pattern and then draw it. The implementation of that hardware is entirely up to the designer and varied widely among machines. The 6845 is intended for character displays, but could also be used for pixel-based graphics, with some clever programming. Among its better-known uses is the BBC Micro, Amstrad CPC, and Videx VideoTerm display cards for the Apple II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
