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 ...

Activity codes are optional four digit numerical codes in FAS that may be used to define the activities of a unit in more detail than is available through the account codes.

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 ...