Abstract : Various types of analog-to-digital converters (ADC's) are currently on the market. Intended to familiarize the reader with different ADC's, this report examines three specific types: integrating, successive approximation, and flash or parallel and subranging converters. The methods by which these ADC's process signals are discussed, in addition to their common uses. This report also includes a brief market survey which demonstrates the many ADC's that are available from different manufacturers.