Short for video RAM, and pronounced vee-ram. VRAM is special-purpose memory used by video adapters. Unlike conventional RAM, VRAM can be accessed by two different devices simultaneously. This enables the RAMDAC to access the VRAM for screen updates at the same time that the video processor provides new data. VRAM yields better graphics performance but is more expensive than normal RAM.
A special type of VRAM, called Windows RAM (WRAM), yields even better performance than conventional VRAM.
Short for voltage regulator module, a small module that installs on a motherboard to regulate the voltage fed to the microprocessor. Nearly all motherboards have either a built-in voltage regulator or a VRM, the only difference being that the VRM is replaceable.
Pronounced ver-mal, and short for Virtual Reality Modeling Language, VRML is a specification for displaying 3-dimensional objects on the World Wide Web. You can think of it as the 3-D equivalent of HTML. Files written in VRML have a.wrl extension (short for world). To view these files, you need a VRML browser or a VRML […]
Short for Virtual Router Redundancy Protocol, an election protocol that dynamically assigns responsibility for one or more virtual router(s) to the VRRP router(s) on a LAN, allowing several routers on a multiaccess link to utilize the same virtual IP address. A VRRP router is configured to run the VRRP protocol in conjunction with one or […]
Short for Virtual Storage Access Method, a file management system used on IBM mainframes. VSAM speeds up access to data in files by using an inverted index (called a B+tree) of all records added to each file. Many legacy software systems use VSAM to implement database systems (called data sets).
1. Short for vestigial side band, a method for modulating — or converting for transmission — digital data over coaxial cable. Created by Zenith, VSB has been chosen by the FCC as a standard for digital TV. 2. Short for VME Subsystem Bus, an auxiliary bus used with a primary 32-bit bus called a VME […]