LOCI (LOgarithmic Calculating Instrument) desktop electronic calculator for scientific applications. First calculator capable of generating logarithms of numbers. New technique in electronics pioneered with LOCI--Concept of hardwiring beyond the basic four functions (+- --*- and /). Hardwiring means circuitry within calculator soldered together so that same function is performed every time a special key is touched- eliminating many steps. Well received in the scientific community- major contribution was to identify need for simpler- less expensive calculator for business and scientific applications. Need was answered by the desktop 300 series in 1965.