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ANSI Bomb
ANSI.SYS is a device driver in the DOS family of operating systems that provides extra console functions through ANSI escape sequences. It is partially based upon a subset of the text terminal control standard proposed by the ANSI X3L2 Technical Committee on Codes and Character Sets (the "X3 Committee"). As it was not installed by default, and was notoriously slow, little software took advantage of it and instead resorted to directly manipulating the IBM PC hardware. A number of third-party alternatives that ran at reasonable speed were created, such as , and to attempt to change this. Usage To use under DOS, a line is added to the (or under Windows NT based versions of Windows) file that reads: : DEVICE=''drive:''\''path''\ANSI.SYS ''options'' where ''drive:'' and ''path'' are the drive letter and path to the directory in which the file is found, and ''options'' can be a number of optional switches to control the behaviour. may also be loaded into upper memory via /. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Device Driver
In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to know precise details about the hardware being used. A driver communicates with the device through the computer bus or communications subsystem to which the hardware connects. When a calling program invokes a routine in the driver, the driver issues commands to the device (drives it). Once the device sends data back to the driver, the driver may invoke routines in the original calling program. Drivers are hardware dependent and operating-system-specific. They usually provide the interrupt handling required for any necessary asynchronous time-dependent hardware interface. Purpose The main purpose of device drivers is to provide abstraction b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VGA-compatible Text Mode
VGA text mode was introduced in 1987 by IBM as part of the VGA standard for its IBM PS/2 computers. Its use on IBM PC compatibles was widespread through the 1990s and persists today for some applications on modern computers. The main features of VGA text mode are colored (programmable 16-color palette) characters and their background, blinking, various shapes of the cursor (block/underline/hidden static/blinking), and loadable fonts (with various glyph sizes). The Linux console traditionally uses hardware VGA text modes, and the Win32 console environment has an ability to switch the screen to text mode for some text window sizes. Data arrangement Text buffer Each screen character is represented by two bytes aligned as a 16-bit word accessible by the CPU in a single operation. The lower (or character) byte is the actual code point for the current character set, and the higher (or attribute) byte is a bit field used to select various video attributes such as color, blink ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DR-DOS
DR-DOS is a disk operating system for IBM PC compatibles, originally developed by Gary A. Kildall's Digital Research, Inc. and derived from Concurrent PC DOS 6.0, which was an advanced successor of CP/M-86. Upon its introduction in 1988, it was the first DOS that attempted to be compatible with IBM PC DOS and MS-DOS. Its first release was version 3.31, named so that it would match MS-DOS's then-current version. DR DOS 5.0 was released in 1990 as the first to be sold in retail; it was critically acclaimed and led to DR DOS becoming the main rival to Microsoft's MS-DOS, who quickly responded with its own MS-DOS 5.0 but releasing over a year later. It introduced a graphical user interface layer called ViewMAX. DR DOS 6.0 was released in 1991; then with Novell's acquisition of Digital Research, the following version was named Novell DOS 7.0 in 1994. After another sale, to Caldera, updated versions were released partly open-source under the Caldera moniker, and briefly as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM PC DOS
IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System),Formally known as "The IBM Personal Computer DOS" from versions 1.0 through 3.30, as reported in those versions' respective COMMAND.COM outputs also known as PC DOS or IBM DOS, is a discontinued disk operating system for the IBM Personal Computer, its successors, and IBM PC compatibles. It was sold by IBM from the early 1980s into the 2000s. Developed by Microsoft, it was also sold by that company to the open market as MS-DOS. Both operating systems were identical or almost identical until 1993, when IBM began selling PC DOS 6.1 with its own new features. The collective shorthand for PC DOS and MS-DOS was DOS, which is also the generic term for disk operating system, and is shared with dozens of disk operating systems called DOS. History The IBM task force assembled to develop the IBM PC decided that critical components of the machine, including the operating system, would come from outside vendors. This r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MS-DOS 2
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-DOS, se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminate-and-stay-resident Program
A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time. TSRs are used only in DOS, not in Windows. Some TSRs are utility software that a computer user might call up several times a day, while working in another program, by using a hotkey. Borland Sidekick was an early and popular example of this type. Others serve as device drivers for hardware that the operating system does not directly support. Use Normally DOS can run only one program at a time. When a program finishes, it returns control to DOS using the system call of the DOS API. The memory and system resources used are then marked as unused. This makes it impossible to restart parts of the program without having to reload it all. Howev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PKWARE
PKWARE, Inc. is an American enterprise data protection software company that provides discovery, classification, masking and encryption software, along with data compression software. It is used by organizations in a range of industries including financial services, manufacturing, military, healthcare and government. The company's products are intended to assist other companies in complying with various data protection regulations such as GDPR and CCPA. The company is headquartered in Milwaukee, Wisconsin with additional offices in the US, UK, and India. PKWARE was founded in 1986 by Phil Katz, co-inventor of the ZIP standard. Thompson Street Capital Partners acquired PKWARE Inc. in 2020. History Compression software (1986–2000) PKWARE was founded in 1986 by Phil Katz, a software developer who had begun distributing a new file compression utility, called PKARC, as shareware. PKARC represented a radical improvement over existing compression software (including the ARC ut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FreeDOS
FreeDOS (formerly PD-DOS) is a free software operating system for IBM PC compatible computers. It intends to provide a complete MS-DOS-compatible environment for running Legacy system, legacy software and supporting embedded systems. FreeDOS can be booted from a floppy disk or USB flash drive and is designed to run well under virtualization or x86 Emulator, emulation. The FreeDOS project began under Jim Hall (computer programmer), Jim Hall in 1994, and the first Stable version, stable version was released in 2006. Unlike most versions of MS-DOS, FreeDOS is composed of free software, Software license, licensed under the terms of the GNU General Public License. However, other packages that form part of the FreeDOS project include non-GPL software considered worthy of Digital preservation, preservation, such as 4DOS, which is distributed under a modified MIT License. Distribution FreeDOS 1.1, released on 2 January 2012, is available for download as a CD-ROM image: a limited in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datalight ROM-DOS
Datalight was a privately held software company specializing in power failsafe and high performance software for preserving data integrity in embedded systems. The company was founded in 1983 by Roy Sherrill, and its headquarters is in Bothell, Washington. As of 2019, the company was a subsidiary of Tuxera under the name of Tuxera US Inc. Overview and history Datalight was founded in 1983 by Roy Sherrill, a former Boeing engineer.100 MB) and large numbers of files. In 2013, another file system related patent, "Method and Apparatus for Fault-tolerant Memory Management" was issued. In June 2019, the Finnish storage software and networking technology company Tuxera signed an agreement to acquire Datalight. Products Reliance family Reliance First released in 2003, Reliance is an embedded file systemMiller, Drew. ''Black Hat Physical Device Security: Exploiting Hardware and Software''p. 49 Syngress, 2004. . designed for applications with high reliability requirements.Rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trojan Horse (computing)
In computing, a trojan horse (or simply trojan; often capitalized, but see below) is a kind of malware that misleads users as to its true intent by disguising itself as a normal program. Trojans are generally spread by some form of social engineering (security), social engineering. For example, a user may be duped into executing an email attachment disguised to appear innocuous (e.g., a routine form to be filled in), or into clicking on a fake advertisement on the Internet. Although their payload can be anything, many modern forms act as a backdoor (computing), backdoor, contacting a controller who can then have unauthorized access to the affected device. Ransomware attacks are often carried out using a trojan. Unlike computer viruses and Computer worm, worms, trojans generally do not attempt to inject themselves into other files or otherwise propagate themselves. Origins of the term The term is derived from the Ancient Greece, ancient Greek story of the deceptive Trojan Horse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Keyboard
A computer keyboard is a built-in or peripheral input device modeled after the typewriter keyboard which uses an arrangement of buttons or Push-button, keys to act as Mechanical keyboard, mechanical levers or Electronic switching system, electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter-style keyboards have been the main input device, input method for computers since the 1970s, supplemented by the computer mouse since the 1980s, and the touchscreen since the 2000s. Keyboard keys (buttons) typically have a set of characters Engraving, engraved or Printing, printed on them, and each press of a key typically corresponds to a single written symbol. However, producing some symbols may require pressing and holding several keys simultaneously or in sequence. While most keys produce character (computing), characters (Letter (alphabet), letters, Numerical digit, numbers or symbols), other keys (such as the escape key) can prompt the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CLS (DOS Command)
CLS may refer to: Academic fields * Critical legal studies, school of legal philosophy * Constrained least square statistical estimator * CLs method to set bounds on particle physics model parameters * The .cls file extension, used to hold LaTeX manuscripts - see LaTeX § Compatibility and converters Education *California Labor School, San Francisco, US 1942–57 *City of London School, UK *Covington Latin School, Kentucky, US *Crystal Lake South High School, Illinois, US * Chicago Law School at The University of Chicago, US *Columbia Law School at Columbia University, US *Cornell Law School at Cornell University, US * Critical Language Scholarship Program of the US State Department Societies and associations * Caribbean Labour Solidarity, based in London, UK * Chicago Linguistic Society * Chinese Language Society * Christian Legal Society * Communist League of Struggle, US, 1931-1937 Software and technology * Cable landing station, where a submarine cable comes ashore * Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
