| 摘要 |
PURPOSE:To improve counting accuracy every time counting operation is added, by obtaining an approximate function by using the data of (k) sets of numbers/ weights, obtaining the approximate function every time the set is renewed, and updating the contents in a data memory means for number operation. CONSTITUTION:At first, samples of the known number (x) are mounted on a pan 1a. The weight y0 of the samples is obtained with a load detecting part 1. An expression x=f0(y)=(x0/y0)y is obtained and stored in a nonvolatile RAM 24. Thereafter, samples, whose number is unknown, are mounted on the pan 1a. The number of the samples is computed by using the weight yk+1 of the samples and an expression x=fk(y) in the RAM 24. Namely, xk+1={integer closest to fk(yk+1)} is operated 21. The result is displayed on a display device 3. Then (xk+1 and yk+1), which are the data obtained by combining said two values, are additionally stored in the RAM 24. An approximate expression of relationship between (x) and (y), i.e., x=fk+1(y), is obtained by using all the data groups (xi, yi) after addition. The expression in the RAM 24 is updated. Thereafter, the same operation is performed every time the measurement of the samples, whose number is unknown, is performed. Therefore, even if a lot is changed, the counting accuracy is not deteriorated.
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