In programming, a constant is a value that never changes. The other type of values that programs use is variables, symbols that can represent different values throughout the course of a program.
A constant can be
a number, like 25 or 3.6
a character, like a or $
a character string, like “this is a string”
Constants are also used in spreadsheet applications to place non-changing values in cells. In contrast, a spreadsheet formula can produce a different value each time the spreadsheet is opened or changed.
In DRM, a constrictor is a software component that degrades the quality of a video signal. When the signal is copied, it produces a low-grade analog copy making it useless to pirates to copy and distribute. When these signals are resampled back to high resolution the signal will still be poorer quality than the original.
- Consumer Electronics (CE)
Consumer electronics refers to any device containing an electronic circuit board that is intended for everyday use by individuals. This encompasses a massive category of electronics that includes televisions, cameras, digital cameras, PDAs, calculators, VCRs, DVDs, clocks, audio devices, headphones, tablets, smartphones and many other home products.
- consumer optical fiber
Slang term used to describe plastic optical fiber.
- contact image sensor
(kon´takt im´ij sen´s&r) (n.) Abbreviated as CIS, a type of optical flatbed scanner that does not use the traditional CCD arrays that rely on a system of mirrors and lenses to project the scanned image onto the arrays. CIS scanners gather light from red, green and blue LEDs (which combine to provide white light) and […]
- contact manager
An application that enables you to easily store and find contact information, such as names, addresses and telephone numbers. Sophisticated contact managers provide reporting functions and allow several people in a workgroup to access the same database of contacts. Some also provide calendar functions, which blurs the line between contact managers and personal information managers […]