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MITS 7400 Scientific/Engineering Calculator

MITS' most advanced desktop electronic calculator. Stack-based scientific and engineering calculator with fourteen digit accuracy and ten digits displayed on LED display. Standard and exponential notation, with exponent ranging from -99 to +99. Two store/recall memory registers, with three (Model 7440A), five (Model 7440B), or seven (Model 7440C) register stack. Available in kit or assembled form. Prices at introduction were $299.95(kit)/$379.95(assembled) for the Model 7400A, $399.95(assembled) for the 7400B, and $419.95(assembled) for the 7400C. Introduced in December of 1972.