interlaced scan
Interlaced scan is one of two methods used for “painting” an image on a television screen (the other being progressive scan). Designed for the analog NTSC television system, interlaced scanning uses two fields to create a frame. One field contains all the odd lines in the image, the other contains all the even lines of the image. A television scans 60 fields every second (30 odd and 30 even). These two sets of 30 fields are combined to create a full frame every 1/30th of a second, resulting in a display of 30 frames per second. Drawbacks to interlaced scanning compared to progressive scanning include flicker, lower resolution and quality issues.
Compare with progressive scan.
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Main memory divided into two or more sections. The CPU can access alternate sections immediately, without waiting for memory to catch up (through wait states). Interleaved memory is one technique for compensating for the relatively slow speed of dynamic RAM (DRAM). Other techniques include page-mode memory and memory caches.
- interleave
)To arrange data in a noncontiguous way to increase performance. When used to describe disk drives, it refers to the way sectors on a disk are organized. In one-to-one interleaving, the sectors are placed sequentially around each track. In two-to-one interleaving, sectors are staggered so that consecutively numbered sectors are separated by an intervening sector. […]
- internal bus
Another name for an internal data bus. Also, an expansion bus is often referred to as an internal bus.
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In DOS systems, an internal command is any command that resides in the COMMAND.COM file. This includes the most common DOS commands, such as COPY and DIR. Commands that reside in other COM files, or in EXE or BAT files, are called external commands.
- internal data bus
A bus that operates only within the internal circuitry of the CPU, communicating among the internal caches of memory that are part of the CPU chip��s design. This bus is typically rather quick and is independent of the rest of the computer��s operations. Contrast with external data bus. The bit width of internal and external […]