Urnfield culture numerals and some tally mark systems are also biquinary.
2.
Several human languages, most notably Wolof, also use biquinary systems.
3.
Units of currencies are commonly partially or wholly biquinary.
4.
This could be considered a form of biquinary code.
5.
Most versions of the abacus use a biquinary system to simulate a decimal system for ease of calculation.
6.
Today, the main usage of base 5 is as a biquinary system, which is decimal using five as a sub-base.
7.
The pinwheels are biquinary; digits 1 through 4 cause the corresponding number of sliding pins ot extend from the surface; digits 5 through 9 also extend a five-tooth sector as well as the same pins for 6 through 9.
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