View source for Bi-quinary

A '''bi-quinary''' code is one way of storing decimal digits using [[binary]] [[memory]] elements. 7 [[bit]]s are used per digit: two bits are used to select between the 0-4 and 5-9 ranges, and 5 bits to indicate each of the 5 possible values in each range.

Although inefficient in storage terms, this representation allowed extensive error checking, since only 10 codes out of the 128 available were valid. Checking in [[hardware]] was simple, since only one bit was allowed to be on in each of the two fields.

{{semi-stub}}