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Software Bus
A software bus is a software architecture model where a shared communication channel facilitates connections and communication between software modules. This makes software buses conceptually similar to the ''bus'' used in computer hardware for interconnecting pathways. In the early microcomputer era of the 1970s, Digital Research's operating system CP/M was often described as a ''software bus''. Lifeboat Associates, an early distributor of CP/M and later of MS-DOS software, had a whole product line named ''Software Bus''. D-Bus is used in many modern desktop environments to allow multiple processes to communicate with one another. Examples * Lifeboat Associates Software Bus-80 aka SB-80, a version of CP/M-80 for 8080/ Z80 8-bit computers * Lifeboat Associates Software Bus-86 aka SB-86, a version of MS-DOS for x86 16-bit computers. * Component Object Model for in-process and interprocess communication. * D-Bus for interprocess communication. * Enterprise service bus for dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Architecture
Software architecture is the set of structures needed to reason about a software system and the discipline of creating such structures and systems. Each structure comprises software elements, relations among them, and properties of both elements and relations. The ''architecture'' of a software system is a metaphor, analogous to the architecture of a building. It functions as the blueprints for the system and the development project, which project management can later use to extrapolate the tasks necessary to be executed by the teams and people involved. Software architecture is about making fundamental structural choices that are costly to change once implemented. Software architecture choices include specific structural options from possibilities in Software design, the design of the software. There are two fundamental laws in software architecture: # Everything is a trade-off # "Why is more important than how" "Architectural Kata" is a teamwork which can be used to produce an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bus (computing)
In computer architecture, a bus (historically also called a data highway or databus) is a communication system that transfers Data (computing), data between components inside a computer or between computers. It encompasses both Computer hardware, hardware (e.g., wires, optical fiber) and software, including communication protocols. At its core, a bus is a shared physical pathway, typically composed of wires, traces on a circuit board, or busbars, that allows multiple devices to communicate. To prevent conflicts and ensure orderly data exchange, buses rely on a communication protocol to manage which device can transmit data at a given time. Buses are categorized based on their role, such as system buses (also known as internal buses, internal data buses, or memory buses) connecting the Central processing unit, CPU and Computer memory, memory. Expansion buses, also called peripheral buses, extend the system to connect additional devices, including peripherals. Examples of widely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Hardware
Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random-access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices such as a Computer monitor, monitor, Computer mouse, mouse, Computer keyboard, keyboard, and Computer speakers, speakers. By contrast, software is a set of written instructions that can be stored and run by hardware. Hardware derived its name from the fact it is ''Hardness, hard'' or rigid with respect to changes, whereas software is ''soft'' because it is easy to change. Hardware is typically directed by the software to execute any command or Instruction (computing), instruction. A combination of hardware and software forms a usable computing system, although Digital electronics, other systems exist with only hardware. History Early computing devices were more complicated than the ancient abacus date to the seventeenth century. French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Research
Digital Research, Inc. (DR or DRI) was a privately held American software company created by Gary Kildall to market and develop his CP/M operating system and related 8-bit, 16-bit and 32-bit systems like MP/M, Concurrent DOS, FlexOS, Multiuser DOS, DOS Plus, DR DOS and Graphics Environment Manager, GEM. It was the first large software company in the microcomputer world. Digital Research was originally based in Pacific Grove, California, later in Monterey, California. History 1974–1979: Founding and incorporation In 1972, Gary Kildall, an instructor at the Naval Postgraduate School in Monterey, California, began working at Intel as a consultant under the business name Microcomputer Applications Associates (MAA). By 1974, he had developed Control Program/Monitor, or CP/M, the first disk operating system for microcomputers. In 1974 he incorporated as Intergalactic Digital Research, with his wife handling the business side of the operation. The company soon began opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CP/M
CP/M, originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created in 1974 for Intel 8080/Intel 8085, 85-based microcomputers by Gary Kildall of Digital Research, Digital Research, Inc. CP/M is a disk operating system and its purpose is to organize files on a magnetic storage medium, and to load and run programs stored on a disk. Initially confined to single-tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations and were migrated to 16-bit processors. CP/M's core components are the ''Basic Input/Output System'' (BIOS), the ''Basic Disk Operating System'' (BDOS), and the ''Console Command Processor'' (CCP). The BIOS consists of drivers that deal with devices and system hardware. The BDOS implements the file system and provides system services to applications. The CCP is the command-line interpreter and provides some built-in commands. CP ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifeboat Associates
Lifeboat Associates, Inc., was a New York City company that was one of the largest microcomputer software distributors in the late 1970s and early 1980s. Lifeboat acted as an independent software broker marketing software to major hardware vendors such as Xerox, HP and Altos. As such Lifeboat Associates was instrumental in the founding of Autodesk and also financed the creation of ''PC Magazine''. Overview Lifeboat was founded in 1976Programmers Paradise Inc., Form 10-K, for the fiscal year ended December 31, 199/ref> or 1977 by Larry Alkoff and Tony Gold. By mid-1981 the company had same-name affiliates in England, Switzerland, France, Germany, Japan and Oakland, California. ''PC Magazine'' in 1982 wrote that Lifeboat "has published and marketed more CP/M application programs on more 8-bit machines than anyone in the world", and in 1983 ''InfoWorld'' said that Lifeboat was the largest publisher of microcomputer software in the world. Lifeboat Associates combined many roles, i ... [...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-DOS, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Press
Microsoft Press is the publishing arm of Microsoft, usually releasing books dealing with various current Microsoft technologies. Microsoft Press' introduced books were ''The Apple Macintosh Book'' by Cary Lu and ''Exploring the IBM PCjr Home Computer'' by Peter Norton in 1984 at the West Coast Computer Faire. The publisher has gone on to release books by other recognizable authors such as Charles Petzold, Steve McConnell, Mark Russinovich and Jeffrey Richter. Following a deal signed in 2009, O'Reilly Media became the official distributor of Microsoft Press books. In 2014, the distributor was changed to Pearson PLC, Pearson. In July 2016, Microsoft Press editorial staff was laid off. References External links * Microsoft divisions Computer book publishing companies Publishing companies established in 1984 {{microsoft-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D-Bus
D-Bus (short for "Desktop Bus") is a message-oriented middleware mechanism that allows communication between multiple Process (computing), processes running concurrently on the same machine. D-Bus was developed as part of the freedesktop.org project, initiated by GNOME developer Havoc Pennington to standardize services provided by Linux desktop environments such as GNOME and KDE. The freedesktop.org project also developed a free and open-source software library called libdbus, as a reference implementation of the specification. This library is not D-Bus itself, as other implementations of the D-Bus specification also exist, such as GDBus (GNOME), QtDBus (Qt (software), Qt/KDE), dbus-java and sd-bus (part of systemd). Overview D-Bus is an inter-process communication (IPC) mechanism initially designed to replace the software component communications systems CORBA and Desktop communication protocol, DCOP, used by the GNOME and KDE Linux desktop environments respectively. The comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desktop Environment
In computing, a desktop environment (DE) is an implementation of the desktop metaphor made of a bundle of programs running on top of a computer operating system that share a common graphical user interface (GUI), sometimes described as a graphical shell. The desktop environment was seen mostly on personal computers until the rise of mobile computing. Desktop GUIs help the user to easily access and edit files, while they usually do not provide access to all of the features found in the underlying operating system. Instead, the traditional command-line interface (CLI) is still used when full control over the operating system is required. A desktop environment typically consists of icons, windows, toolbars, directory (file systems), folders, computer wallpaper, wallpapers and Widget engine, desktop widgets (see Elements of graphical user interfaces and WIMP_(computing), WIMP). A GUI might also provide drag and drop functionality and other features that make the desktop metaphor mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SB-80
Lifeboat Associates, Inc., was a New York City company that was one of the largest microcomputer software distributors in the late 1970s and early 1980s. Lifeboat acted as an independent software broker marketing software to major hardware vendors such as Xerox, HP and Altos. As such Lifeboat Associates was instrumental in the founding of Autodesk and also financed the creation of ''PC Magazine''. Overview Lifeboat was founded in 1976Programmers Paradise Inc., Form 10-K, for the fiscal year ended December 31, 199/ref> or 1977 by Larry Alkoff and Tony Gold. By mid-1981 the company had same-name affiliates in England, Switzerland, France, Germany, Japan and Oakland, California. ''PC Magazine'' in 1982 wrote that Lifeboat "has published and marketed more CP/M application programs on more 8-bit machines than anyone in the world", and in 1983 ''InfoWorld'' said that Lifeboat was the largest publisher of microcomputer software in the world. Lifeboat Associates combined many roles, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
