flow control


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flow control

[′flō kən‚trōl]
(engineering)
Any system used to control the flow of gases, vapors, liquids, slurries, pastes, or solid particles through or along conduits or channels.

flow control

Measures designed to adjust the flow of traffic into a given airspace, along a given route, or bound for a given aerodrome, so as to ensure the most effective utilization of the airspace (ICAO). ATC (air traffic control) may apply restrictions to the flow of air traffic to ensure that the elements of the common systems, such as airports or airways, do not become saturated.

flow control

(communications, protocol)
The collection of techniques used in serial communications to stop the sender sending data until the receiver can accept it. This may be either software flow control or hardware flow control. The receiver typically has a fixed size buffer into which received data is written as soon as it is received. When the amount of buffered data exceeds a "high water mark", the receiver will signal to the transmitter to stop transmitting until the process reading the data has read sufficient data from the buffer that it has reached its "low water mark", at which point the receiver signals to the transmitter to resume transmission.

flow control

(1) The management of transmission between two devices such as nodes in a network or between the CPU and peripheral devices. It provides notification to the sending device to slow down or speed up data transmission or data transfer due to the receiving device's current ability to keep up with it. Flow control also enables slower-speed devices to communicate with higher-speed ones and vice versa. See xon-xoff.

(2) In programming, the if-then and loop statements that make up the program's logic.
References in periodicals archive ?
Summary: Orc, the global leader in derivatives trading technology, today announced that AlphaGen Securities LLC, a broker/dealer headquartered in Chicago, has chosen the award-winning Orc Flow Control as its pre-trade risk management system.
Xylem Flow Control Ltd has been acquired by Rotork plc.
The law, which dictates that all waste generated in Horry County be disposed at the county's landfill, survived one previous legal challenge and action by the state legislature to outlaw flow control.
When the differential pressure across it is varied, the automatic flow control usually has a spring-loaded cartridge that dynamically absorbs pressure fluctuations, resulting from changing flow conditions, valve modulation, etc.
com)-- TechNavio's analysts forecast the Global Flow Control market to grow at a CAGR of 4.
TYCO Flow Control has earned a prestigious award for excellence in the valve industry for demonstrating outstanding achievement and superior performance in the Southeast Asian markets.
Disposable absorbent article having an aperture flow control layer.
In stark contrast to PCI, in which flow control was handled through sideband signals, PCIe flow control is an in-band, point-to-point mechanism using both DLLPs (Update FC packets) and TLPs to update flow control state between the ends of a single link (not the ends of an entire set of links).
Tyco Flow Control is on track to complete an order for 3,680 safety relief valves from the Chiyoda Technip Joint Venture by the end of 2008.
Flow control deals with the rate of energy transfer which, in turn, is related to the rate of fluid flow.
Options: Color dosing, network communications, closed-loop flow control, custom engineering and programming.
TELECOMWORLDWIRE-10 August 2004-Internap Network Services launches Flow Control Xcelerator(C)1994-2004 M2 COMMUNICATIONS LTD http://www.