Quick Search

Advanced Search

Q CKInfo Items

Computer Knowledge information pages for terms starting with the letter Q.

QBE - Query By Example

(Q-B-E) A method of extracting information from a database. The user fills in a table with examples of the type of information required and the QBE engine attempts to acquire the needed data from the database. QBE was developed by Moshé Zloof of I...

QCELP - QualComm Code Excited Linear Predictive Coding

(Q-kelp) A vector quantizer-based speech codec that changes compression ratios for segments of speech. More Information Planet Analog Article

QCIF - Quarter Common Intermediate Format

(Q-C-I-F) A videoconferencing standard that uses frames of 176 pixels by 144 lines at 30 frames/second. This is a quarter of the full Common Intermediate Format. More Information H.320 Summary

QIC - Quarter-Inch Cartridge

(quick) A magnetic tape drive standard popular in personal computers. Typically used for backing up a computer's hard drive. QIC standards are controlled by a group of manufacturers (Quarter-Inch Cartridge Drive Standards, Inc.). There are two pop...

QoS - Quality of Service

(Q-O-S) Quality, in this case, means a guaranteed throughput for a network. QoS is effectively a guarantee of a certain minimum ability to communicate over a network. Not all network types can specify a QoS. More Information QoS Paper

QSIG - Q (point of the ISDN model) Signaling

(cue-sig) Based on ISDN Q.931 standards, QSIG is a common channel signaling protocol. QSIG is used to manage calls and other features in digital PBX systems. More Information Cisco ISDN PRI QSIG Voice Signaling QSIG - Frequently Asked Questions

Query - A structured database statement

Generally used with database management systems (or database programs), a query is generally a structured statement that the database system uses to extract specific requested data from the database. A query specifies the criteria by which data is...

QWERTY - QWERTY

(kwer-tee) Not specifically an acronym, but the characters represent the key arrangement in the upper left corner of the standard keyboard. This arrangement has been standard since 1868 when Christopher Sholes (inventor of the typewriter) defined ...

Recent Blogs