Uses of a microcomputer in a division of general pediatrics are described. Various software systems for word processing (APPLE WRITER and APPLE PIE), data base management (DB MASTER), electronic worksheets (VISICALC), statistics (MICROSTAT), and medical education (CAMPS, PILOT) are described and evaluated. The important first step in developing a program for microcomputers is to determine the department's needs and then match these requirements with appropriate commercial programs. Programming a system is complex, time consuming, and beyond the skills of most physicians. It is better to have equipment that can be expanded than to purchase equipment with greater than necessary capacity (and cost).