Matrox 4Sight EV6 Installation And Hardware Reference page 63

encoder outputs the code in a precise sequence (either 00 - 01 - 11 - 10 or 00 -
10 - 11 - 01, depending on how the encoder is attached). If the rotating shaft, or
sensor moving along a scale, changes direction, the encoder transmits the Gray
code in the reverse sequence (00 - 10 - 11 - 01 or 00 - 01- 11 - 10, respectively).
• RAM.
Random access memory. RAM is memory in which the operating system,
application programs, and data in current use are stored so that they can be
accessed by the processor. Information stored in RAM is lost when power is cut
off. RAM chips can be typically installed on a memory module (such as a
SO-DIMM memory module) that is plugged into the motherboard.
See also SO-DIMM.
• SSD
Solid state drive. A data storage device that has no moving (mechanical)
components. They are typically more resistant to physical shock, run silently, have
lower access time, and less latency than traditional hard disk drives (HDDs).
• SO-DIMM.
Small outline dual in-line memory module. A SO-DIMM is a memory module with
integrated circuitry.
See also RAM.
• UEFI
Unified Extensible Firmware Interface. The interface between the operating system
and the hardware. It is also responsible for booting the operating system when a
unit is turned on. On legacy computers, this was referred to as a BIOS, and in
some menu items BIOS and UEFI are used interchangeably.
Glossary 63