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PCB
PCB may refer to: Science and technology * Polychlorinated biphenyl, an organic chlorine compound, now recognized as an environmental toxin and classified as a persistent organic pollutant * Printed circuit board, a board used in electronics * Plenum chamber burning, in some jet engines Computing * PCB (software), software to design printed circuit boards * PCBoard, bulletin board software for MS-DOS * Process control block, an operating system data structure Organizations * Pacific Coast Borax Company, an American mining company * Pakistan Cricket Board, national regulatory board for cricket in Pakistan * '' Partido Comunista Bolchevique'', the Bolshevik Communist Party in Mexico in the 1960s * '' Partido Comunista Brasileiro'', the Brazilian Communist Party * '' Partido Comunista de Bolivia'', the Communist Party of Bolivia * PCB Piezotronics, a manufacturer of piezoelectric sensors * Police Complaints Board, in England and Wales Places * Panama City Beach, Florida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychlorinated Biphenyl
Polychlorinated biphenyls (PCBs) are highly carcinogenic chemical compounds, formerly used in industrial and consumer products, whose production was banned in the United States by the Toxic Substances Control Act in 1979 and internationally by the Stockholm Convention on Persistent Organic Pollutants in 2001. They are organic chlorine compounds with the formula C12 H10−''x'' Cl''x''; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. Because of their longevity, PCBs are still widely in use, even though their manufacture has declined drastically since the 1960s, when a host of problems were identified. With the discovery of PCBs' environmental toxicity, and classification as persistent organic pollutants, their production was banned by United States federal law in 1978, and by the Stockholm Convention on Persistent Organic Pollutants in 2001. The International Agency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printed Circuit Board
A printed circuit board (PCB; also printed wiring board or PWB) is a medium used in Electrical engineering, electrical and electronic engineering to connect electronic components to one another in a controlled manner. It takes the form of a Lamination, laminated sandwich structure of conductive and insulating layers: each of the conductive layers is designed with an artwork pattern of traces, planes and other features (similar to wires on a flat surface) Chemical milling, etched from one or more sheet layers of copper Lamination, laminated onto and/or between sheet layers of a Insulator (electricity), non-conductive substrate. Electrical components may be fixed to conductive pads on the outer layers in the shape designed to accept the component's terminals, generally by means of soldering, to both electrically connect and mechanically fasten them to it. Another manufacturing process adds Via (electronics), vias: plated-through holes that allow interconnections between layers. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PCBoard
PCBoard (PCB) was a bulletin board system (BBS) application first introduced for DOS in 1983 by Clark Development Company. Clark Development was founded by Fred Clark. PCBoard was one of the first commercial BBS packages for DOS systems, and was considered one of the "high end" packages during the rapid expansion of BBS systems in the early 1990s. Like many BBS companies, the rise of the Internet starting around 1994 led to serious downturns in fortunes, and Clark Development went bankrupt in 1997. Most PCB sales were of two-line licenses; additional line licenses (in ranges of 5, 10, 25, 50, 100, 250 and 1000) were also available. A native 32-bit IBM OS/2 version became also available with PCB V15.22 and higher. There were also a few tools available for PCBoard, which were specifically developed for the OS/2 2.0 and OS/2 Warp operating system. Multinode support PCBoard supported the 16C550 UARTs ( universal asynchronous receiver transmitter), such as 16550 UART ("Fifo"), 1655 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakistan Cricket Board
The Pakistan Cricket Board (PCB) is a sports governing body for cricket in Pakistan responsible for controlling and organising all tours and matches undertaken by the Pakistan national cricket team. A member of the International Cricket Council since 1952, it represents the country's men's and women's national teams in international cricket tournaments played under the ICC. Following the establishment of Pakistan as an independent dominion of the British Empire in 1947, professional and amateur cricket commenced in the same year, seeing as local infrastructure had already been established when the country was part of the British Raj. Cricket matches were arranged informally until 1948, when a Board of Control was formally instituted. Pakistan was admitted to the Imperial Cricket Conference (currently known as International Cricket Council) in July 1952, and has since been a full member, playing Test cricket. The team's first Test series took place in India between October a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partido Comunista Brasileiro
The Brazilian Communist Party ( pt-BR, Partido Comunista Brasileiro), originally the Communist Party of Brazil (), is a communist party in Brazil founded on 25 March 1922 which makes the disputed claim of being the oldest political party still active in the nation. It played an important role in the country's 20th-century history despite the relatively small number of members. A factional dispute led to the formation of PCdoB (Communist Party of Brazil) in the 1960s, though both communist parties were united in opposition to the Brazilian military government that ruled from 1964 to 1985. But with the fall of the Soviet Union and the collapse of communism circa 1990, the party lost power and international support. An internal coup in 1992 divided the party and formed a new party, called Popular Socialist Party, using the former identification number of the PCB, 23. That party has since moved towards the centre and now goes by the name Cidadania. The youth organization o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Communist Party
The Brazilian Communist Party ( pt-BR, Partido Comunista Brasileiro), originally the Communist Party of Brazil (), is a communist party in Brazil founded on 25 March 1922 which makes the disputed claim of being the oldest political party still active in the nation. It played an important role in the country's 20th-century history despite the relatively small number of members. A factional dispute led to the formation of PCdoB (Communist Party of Brazil) in the 1960s, though both communist parties were united in opposition to the Brazilian military government that ruled from 1964 to 1985. But with the fall of the Soviet Union and the collapse of communism circa 1990, the party lost power and international support. An internal coup in 1992 divided the party and formed a new party, called Popular Socialist Party, using the former identification number of the PCB, 23. That party has since moved towards the centre and now goes by the name Cidadania. The youth organization of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PCB Piezotronics
PCB Piezotronics is a manufacturer of piezoelectric sensors. The name ''"PCB"'' is abbreviation for " PicoCoulomB" which is technical terminology defining an electrical charge of the type generated by the piezoelectric sensors they manufacture. It is also a registered trademark of the company. "Piezotronics" combines the science of Piezoelectricity and electronics. PCB® manufactures sensors and related instrumentation. Sensors are small electromechanical instruments for the measurement of acceleration, dynamic pressure, force, acoustics, torque, load, strain, shock, vibration and sound. __TOC__ History Founded by Robert W. Lally and James (Jim) F. Lally in 1967, PCB Piezotronics has evolved from a family business to a large company engineering and manufacturing operation, with technical emphasis on the incorporation of integrated circuit-piezoelectric sensor technology. In 1967 the integrated circuit piezoelectric sensor, also known as ICP sensors, incorporated mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PCB (software)
PCB is a free and open-source software suite for electronic design automation (EDA) - for printed circuit boards (PCB) layout. It uses GTK+ for its GUI widgets. History PCB was first written by Thomas Nau for an Atari ST in 1990 and ported to UNIX and X11 The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X provides the basic framework for a GUI environment: drawing and moving windows on the display device and interacting wi ... in 1994. Initially PCB was not intended to be a professional layout system but as a tool for individuals to do small-scale development of hardware. The second release 1.2 introduced user menus. This made PCB easier to use and increased its popularity. Harry Eaton took over PCB development beginning with Release 1.5, although he contributed some code from Release 1.4.3. PCB includes a topological autorouter named Toporouter, developed by Anthony Blake in a Google-funded Open-source ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Process Control Block
A process control block (PCB) is a data structure used by computer operating systems to store all the information about a process. It is also known as a process descriptor. When a process is created (initialized or installed), the operating system creates a corresponding process control block. This specifies the process state i.e. new, ready, running, waiting or terminated. Role The role of the PCBs is central in process management: they are accessed and/or modified by most utilities, particularly those involved with scheduling and resource management. Structure In multitasking operating systems, the PCB stores data needed for correct and efficient process management. Though the details of these structures are system-dependent, common elements fall in three main categories: * Process identification * Process state * Process control Status tables exist for each relevant entity, like describing memory, I/O devices, files and processes. Memory tables, for example, contain infor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penetration-cum-blast
The Arjun () is a third generation main battle tank developed by the Combat Vehicles Research and Development Establishment (CVRDE) of the Defence Research and Development Organisation (DRDO), for the Indian Army. The tank is named after Arjuna, the archer prince who is the main protagonist of the Indian epic Indian epic poetry is the epic poetry written in the Indian subcontinent, traditionally called ''Kavya'' (or ''Kāvya''; Sanskrit: काव्य, IAST: ''kāvyá''). The ''Ramayana'' and the ''Mahabharata'', which were originally composed in ... poem '' Mahabharata''. Design work began in 1986 and was finished in 1996. The Arjun main battle tank entered service with the Indian Army in 2004. The 43rd Armoured Regiment, formed in 2009, was the first regiment to receive the Arjun. The Arjun features a 120 mm rifled main gun with indigenously developed armour-piercing fin-stabilized discarding-sabot ammunition, one PKT 7.62 mm coaxial machine gun and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
