senior

adj 1: older; higher in rank; longer in length of tenure or

service; "senior officer" [ant: {junior}]

2: used of the fourth and final year in United States high

school or college; "the senior prom" [syn: {senior(a)}, {fourth-year}]

3: advanced in years; (`aged' is pronounced as two syllables);

"aged members of the society"; "elderly residents could

remember the construction of the first skyscraper";

"senior citizen" [syn: {aged}, {elderly}, {older}]

n 1: an undergraduate student during the year preceding

graduation

2: a person who is older than you are [syn: {elder}]

sensor

An electronic device used to measure a physical

quantity such as temperature, pressure or loudness and convert

it into an electronic signal of some kind (e.g a voltage).

Sensors are normally components of some larger electronic

system such as a computer control and/or measurement system.

Analog sensors most often produce a voltage proportional to

the measured quantity. The signal must be converted to

digital form with a {ADC} before the CPU can process it.

Digital sensors most often use serial communication such as

{EIA-232} to return information directly to the controller or

computer through a {serial port}.

(1997-04-15)