Chemical applications of an inexpensive, versatile Digital Time Domain Conversion System are described, including examples of high-speed display of gas chromatographic and flame data and low-speed plotting of high-speed rapid scan data. The system's ability to interconvert slow and fast data increases flexibility of conventional readout devices which are often inherently limited to a certain speed domain. Concepts involved in the design of such systems are presented in such a manner that other researchers can construct a system to meet specific requirements at a minimum of cost.