Used in 3-D computer graphics a shader is a small program or set of algorithms that determines how 3-D surface properties of objects are rendered, and how light interacts with the object within a 3-D computer program. Newer GPUs calculate shaders where previously it was an algorithm calculated by the CPU.
- shadow copy
In some Windows operating systems, when a system restore point is requested, a shadow copy of a file or folder is created. The shadow copy is essentially a previous version of the file or folder at a specific point. See System Restore.
- shadow mask
A perforated metal sheet inside a color monitor. Most color monitor screens use cathode-ray tube (CRT) technology in which electrons are fired from an electron gun onto a phosphor coating on the screen’s faceplate. The phosphor converts the kinetic energy of the electrons into light and is illuminated in tiny red, green and blue dots, […]
A technique used to increase a computer’s speed by using high-speed RAM memory in place of slower ROM memory (RAM is about three times as fast as ROM). On PCs, for example, all code to control hardware devices, such as keyboards, is normally executed in a special ROM chip called the BIOS ROM. However, this […]
- shared Ethernet
The traditional type of Ethernet, in which all hosts are connected to the same bus and compete with one another for bandwidth. In contrast, a switched Ethernet has one or more direct, point-to-point connections between hosts or segments. Devices connected to the Ethernet with a switch do not compete with each other and therefore have […]
- Shared Wireless Access Protocol
Developed by the HomeRF Working Group, SWAP is a specification for wireless voice and data networking in the home. SWAP works together with the PSTN network and the Internet through existing cordless telephone and wireless LAN technologies. It supports TDMA for interactive data transfer and CSMA/CA for high-speed packet transfer. SWAP operates in the 2400 […]