The General Motors Research Laboratories has installed a data acquisition and control computer to be time-shared with a variety of test programs. These include vehicle emissions evaluations, safety studies, transmission investigations, metallurgical processes and materials developments. Many special interface systems have been designed to enhance the computer's compatibility with a variety of test requirements. Expandable remote scanning systems have been developed and manual input and computer display systems were designed to minimize the engineer-computer communication problem. Special vehicle emissions programs were developed utilizing the basic hardware and software systems projected for the overall Research Laboratories operation.