What Is a SIC Code? Standard Industrial Classification (SIC) codes are four-digit numerical codes used to categorize U.S. companies by the industries in which they operate. Companies are required ...

A personal identification number (PIN) is a numerical code used in many electronic financial transactions, providing additional account security.

Precision cosmology: the Large Synoptic Survey Telescope will soon be scanning the heavens. (Courtesy: LSST) A powerful numerical code that uses Einstein’s general theory of relativity to describe how ...

Everyone already uses computers in physics. At the very least, students use handheld calculators (I doubt anyone is still using a slide-rule calculator). Also, it's becoming more common to have ...