Electronic cash register capable of calculating sales tax

Details Electronic cash register capable of calculating sales tax Electronic cash register capable of calculating sales tax

G - Physics

06

F

354/34, 235/5

G06F 7/48 (2006.01) G07G 1/12 (2006.01)

Patent

CA 1065058

ABSTRACT OF THE DISCLOSURE A system and method are disclosed for calculating in an electronic cash register a sales tax imposed upon a total amount of sales based on a predetermined sales tax collection schedule, which schedule comprises a series of the imposable tax values and the corresponding ranges of the taxable sales amounts, a first portion of which comprises a pattern of widths of successive ranges for the successively increasing respective- ly corresponding tax values which does not occur in the rem?inder of the schedule and a second portion of which comprises a pattern of widths of successive said ranges for successively increasing, respectively corresponding tax values which pattern repeats in a regular fashion while the tax value becomes higher. The first and second patterns of width are stored in advance in a storage of said electronic cash register; a usual registering operation is carried out to provide a taxable total amount of sales; an arithmetic operation is carried out to deduct from the taxable total amount of sales the largest possible integral number of full cycles of the taxable amount of repeated pattern in said second portion; the stored schedule of said first and second portions is indexed for determining a first imposable tax cor- responding to the deducted total amount of sales; a second cor- responding sales tax imposable upon said deducted integral num- ber of full cycles of taxable amount of sales is obtained by multiplication of a full cycle of imposable tax amount of the repeated pattern in said second portion by said integral number; and the imposable total amount of sales tax is obtained by addi- tion of said first and second tax amounts thus obtained.

205488

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