(n.) (1) A technique used in advanced microprocessors where the microprocessor begins executing a second instruction before the first has been completed. That is, several instructions are in the pipeline simultaneously, each at a different processing stage.
The pipeline is divided into segments and each segment can execute its operation concurrently with the other segments. When a segment completes an operation, it passes the result to the next segment in the pipeline and fetches the next operation from the preceding segment. The final results of each instruction emerge at the end of the pipeline in rapid succession.
Although formerly a feature only of high-performance and RISC -based microprocessors, pipelining is now common in microprocessors used in personal computers. Intel’s Pentium chip, for example, uses pipelining to execute as many as six instructions simultaneously.
Pipelining is also called pipeline processing.
(2) A similar technique used in DRAM, in which the memory loads the requested memory contents into a small cache composed of SRAM and then immediately begins fetching the next memory contents. This creates a two-stage pipeline, where data is read from or written to SRAM in one stage, and data is read from or written to memory in the other stage.
DRAM pipelining is usually combined with another performance technique called burst mode. The two techniques together are called a pipeline burst cache.
The recessed area on a CD or DVD where data is stored. CDs and DVDs store data in lands and pits. The lands represent 1 and the pits represent 0 in binary computing. The bits are read by the disc drive that uses a laser beam to distinguish between the lands and pits based on […]
(1) For fixed-pitch (or monospaced) fonts, pitch refers to the number of characters printed per inch. Pitch is one characteristic of a monospaced font. Common pitch values are 10 and 12. In proportional-pitch fonts, different characters have different widths, depending on their size. For example, the letter d would be wider than the letter I. […]
Short for Picture Element, a pixel is a single point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected. The number of bits used to represent each pixel determines how […]
- pixel pipelines
The part of a video card that transfers pixel information. The amount of pixel pipelines a graphics card has can have a great impact on the speed of the image rendering. The more pixel pipelines, the faster the video card can process pixels. A card with eight pipelines can process twice as many pixels as […]
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