Flat panel displays (FPDs) are thin, flat, electronic devices used to display data.

Projectors receive data from a computer or video source and project this data onto a screen via internal light sources, power sources and converters

Temperature instruments use contact or noncontact methods to measure temperature.

Temperature sensors are measurement devices that infer temperature by sensing some physical characteristic (i.

Light-emitting diodes (LED) are PN junction devices that give off light radiation when biased in the forward direction.

Digital thermometers are portable temperature sensing devices that have permanent probes and a digital display.

Liquid crystal display (LCD) modules are used at the component level in place of less efficient displays such as cathode ray tubes (CRTs).