Automatic tax calculating apparatus

Registers – Transfer mechanism – Traveling pawl

Patent

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Details

235168, G06F 738

Patent

active

039639100

ABSTRACT:
An automatic tax calculating apparatus comprising a tax amount data memorizing unit for memorizing tax amounts of an unproportional portion a and tax amounts of a proportional portion b of the lowest range, a WT memorizing unit for memorizing a proportional portion repeated money amount W and a step number T of said proportional portion b, a register for memorizing a taxable money amount .alpha., a register for memorizing a maximum money amount A of an unproportional portion, a register for storing a repeated number N of the proportional portion repeated money amount W by storing the result of a calculation of .alpha.-A, a register for memorizing a product E of said repeated number N and said step number T, and a calculating unit for calculating said product and for retrieving from said tax amount data memorizing unit a money amount obtained by subtracting a product of said proportional portion repeated money amount W and said repeated number N from said taxable money amount .alpha. and for calculating a required tax amount by adding said tax amount and a product E of said repeated number N and said step number T.

REFERENCES:
patent: 3253132 (1966-05-01), Pendleton
patent: 3294960 (1966-12-01), Townsend
patent: 3598973 (1971-08-01), Brooks et al.
patent: 3710085 (1973-01-01), Brewer et al.

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