A Binary Coded Decimal Converter
Martin Ziserman · IRE Transactions on Instrumentation · 1956
Of the many different coding schemes possible, the 8-4-2-1 binary decimal code was felt to be the most useful for data handling systems. A transducer wes developed for converting shaft positions to digital numbers in this code. The converter is small, light weight, and produces 10,000 binary coded decimal numbers in 100 revolutions of the input shaft. No ambiguity of number presentations is possible due to the unique configuration of the commutating discs and the brush contacts.