Cyclic redundancy check

A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents. On retrieval, the calculation is repeated and, in the event the check values do not match, corrective action can be taken against data corruption.

CRCs are so called because the check (data verification) value is a redundancy (it expands the message without adding information) and the algorithm is based on cyclic codes. CRCs are popular because they are simple to implement in binary hardware, easy to analyze mathematically, and particularly good at detecting common errors caused by noise in transmission channels. Because the check value has a fixed length, the function that generates it is occasionally used as a hash function.

The CRC was invented by W. Wesley Peterson in 1961; the 32-bit CRC function of Ethernet and many other standards is the work of several researchers and was published in 1975.

CRC

CRC may refer to:

Organizations

Religion

Education and research

Crc (protein)

The Catabolite repression control (Crc) protein participates in suppressing expression of several genes involved in utilization of carbon sources in Pseudomonas bacteria. Presence of organic acids triggers activation of Crc and in conjunction with the Hfq protein genes that metabolize a given carbon source are downregulated until another more favorable carbon source is depleted. Crc-mediated regulation impact processes such as biofilm formation, virulence and antibiotic susceptibility.

Interactions

Hfq and Crc bind to A-rich sequences in the ribosome binding sites of genes that code for carbon utilization enzymes and consequently suppress their translation.

References

Cross Racing Championship Extreme 2005

Cross Racing Championship Extreme 2005 (or CRC 2005) is a Motorsport game developed by Invictus Games, where the player begins his/her career as an amateur Autocross racer and races through 65 various racing events for ultimately becoming the "Cross Racing Champion". These 65 races includes: Autocross, Rallycross, Off-Road, Rally-Sprint, Rally, Road Racing and finally the championship ends in tough Circuit Racing. The prize is a Classic T8 super-car, which can get up to speeds of 280 km/h when the car is in stage 3.

Tracks England[UK] France[Serpentin] America[Beach] Germany[track] Hungary[Mud track] Finland[Snow]

Game features

Utilizing the next generation of the Invictus Engine which incorporates its new real-time physics module, Cross Racing Championship (CRC) will allow the player to experience the thrills of high-speed on and off road racing across vast open terrains.