control code


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control code

[kən′trōl ‚kōd]
(computer science)
A special code that is entered by a user to carry out a particular function, such as the moving or deleting of text in a word-processing program.

control code

(character)
A character which is input or output to cause some special action rather than to appear as part of the data.

Most control characters are input by holding down (either of) the "Control" key(s) on the keyboard and simultaneously pressing another key which may be a letter or (depending on the keyboard and operating system) certain punctuation characters. Some control codes usually have their own special keys: escape, tab, delete, backspace, return and can thus be entered with a single keypress.

Different operating systems and programs have different conventions for what effect typing certain control codes will have, such as interrupting the current process or suspending output.

Control codes may be output for their effect on the output device, e.g. moving the cursor or print head to the start of a new line.

See control-O, control-Q, control-S.

control code

One or more characters used as a command to control a device. The first 32 characters in the ASCII character set are control codes for communications and printers. There are countless codes used to control electronic devices. See escape code.
References in periodicals archive ?
Researchers have been struggling for years to understand this DNA control code, but the new results suggest RNA control could offer a more fruitful area of inquiry, with autism as just one example.
While the printer control codes do not provide enough formatting power for a word processor, they do enable us to create and format simple text files such as batch files.
In the USPS installation, the system required complex control code.
NYSE: VSH) introduced the industry's first remote control code learning IC to integrate signal detection and processing into one component.
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The technology was originally developed to handle coding of control code for spacecraft swarms, but it is broadly applicable to any commercial application where rule-based systems development is used.
Tenders are invited for Disposal of waste and garbage handling of control code 021: 2015 90510000-5 (collection, removal and disposal of solid waste) per individual and disposal of solid waste) per individual schedule and location of containers
This is usually required every six months, with an L8 certificate - referring to the HSE legionella control code of practice--issued by the cleaning contractor on completion of the work.
Other topics include operational semantics for real-time processes with action refinement, verification of an off-line checker for priority queues, control code obfuscation by abstract interpretation, an open source and XML-based platform for rigorous software development, and a synchronous process calculus for service costs.
Adopting the Regulation establishing an EU border control code, which is currently being debated by the European Parliament and Council of Ministers, will be crucial, he said.
Integrating two XCores[TM], each containing a 32-bit processor, the XS1-G2, which is code-compatible with the XS1-G4 device, provides 800MIPs and allows complete systems to be implemented in software using interface, DSP and control code.
Tenders are invited for Code for DC 021: 2015 33140000-3 Medical - 9 lots: Lot 1: control code 021: 2015 33140000-3 Medical (silk 3) Lot 2: 021 Civil code: 2015 Medical 33140000-3 (Blade to scalpel) Lot 3: DC code 021: 2015 33140000-3 Medical (wool) Lot 4: code DK 021: 2015 33140000-3 Medical (surgical gloves) Lot 5: code DK 021: 2015 33140000-3 Medical supplies (syringes) Lot 6: code DK 021: 2015 33140000-3 Medical supplies (catheters) Lot 7: Civil code 021: 2015 33140000-3 Medical (accessory for venipuncture and blood sampling (vacuum system ihly)) Lot 8: code DK 021: 2015 33140000-3 Medical (l antsety for blood sampling) Lot 9 code DK 021: 2015 33140000-3 Medical (dialyzers, highways)