“CMOS” can also refer to nonvolatile memory on the motherboard of a personal computer; see Nonvolatile BIOS memory.
This article is about digital logic circuits. For the style guide, see The Chicago Manual of Style.
 
Static CMOS InverterCMOS (pronounced “see-moss”), which stands for complementary metal-oxide-semiconductor, is a major class of integrated circuits. CMOS chips include microprocessor, microcontroller, […]

Relay is also the name of a series of medium-altitude satellites; the first of which was launched in 1962.
Automotive style miniature relayA relay is an electrical switch that opens and closes under control of another electrical circuit. In the original form, the switch is operated by an electromagnet to open or close one or many […]

A data sheet is a document summarizing the characteristics of an electronic component in sufficient detail that a skilled engineer can integrate the component to a new circuit design.
 
http://en.wikipedia.org/wiki/Datasheet