Abstract: This disclosure describes a novel computer system in which a large capacity, serial storage medium, on which standardized programs and data banks can be economically recorded, as the primary memory component. The operating software program is not transferred into core memory, as is typical of present day computers, but remains resident in the memory on which it has been prerecorded. The resulting system is lower in cost, and especially suitable for using standardized programs which can be distributed in machine compatible form at modest cost.

Abstract: Method and apparatus for measuring engine performance with respect to fuel consumption either in miles per gallon or gallons per hour is provided. Such performance, in engines either in vehicles or stationary machines, is measured by a digital counting, measuring and calculating system. Fuel flow rate and distance traveled, or elapsed time units are converted respectively to streams of electric pulses which are counted and the ratio thereof calculated and the results transmitted to a display. Current and average performance characteristics of an engine are displayed. For example, the current and average miles per gallon of a motor vehicle are displayed to the operator.