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Number calculation ruler

A digital calculation and long ruler technology, applied in the field of mathematics, can solve the problems of inconvenient portability, inability to perform addition and subtraction operations, error-prone, etc., and achieve the effect of easy portability

Pending Publication Date: 2017-07-28
张可成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The calculation tools used in traditional mathematical calculations are generally calculators, abacus, slide rules, etc., but if only calculators are used, especially for children and primary school students, their calculation ability will be greatly affected, and it is necessary to Batteries have energy consumption; and the abacus has been gradually eliminated due to its large size, inconvenient carrying and inconvenient use
A slide rule, in its most basic form, uses two logarithmic scales for multiplication and division, common operations that are time-consuming and error-prone when performed on paper, with the disadvantage of not being able to perform addition and subtraction, Must use an abacus or other aids for addition and subtraction

Method used

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Experimental program
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Embodiment 1

[0017] Embodiment 1: as attached figure 1 As mentioned above, the two simple ruler structures designed by the structure of the present invention, wherein the long ruler 1 is a moving ruler, and the short ruler 2 is a fixed ruler, a chute 3 is arranged on one side of the short ruler 2, and a display frame 4 is arranged at the chute, and the long ruler 2 is a fixed ruler. Chi 1 can slide in the chute. The present invention can be applied to various algorithms, and its usage principle is as follows:

[0018] 1. Digital movement (alignment) algorithm:

[0019] This digital slide rule is designed by using the law of movement of real numbers on the number axis. When in use, first dial the addend a to the display box, then find the addend a in the display box on the scale, and then push the addend b on the moving scale to make the addend b on the moving scale and Align the addend a on the fixed scale, and the sum of addition will be automatically displayed in the display box; in t...

Embodiment 2

[0040] as attached figure 2 Shown, is to utilize the five-digit slide rule that the present invention is provided with, wherein the short ruler is a fixed ruler, the long ruler is a moving ruler, and the number of short rulers is 6, and a chute is formed between adjacent short rulers for 5 long rulers to slide respectively. Display frames are set at both ends of the chute. The front of the long ruler is marked with two groups of natural numbers from "0" to "9" in sequence, and the reverse of the long ruler is marked with "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "0", "9", "8", "7", "6", "5", "4 ", "3", "2" and "1", and the natural numbers from "9" to "1" are marked on the short ruler in sequence. The method of using this slide rule is as follows:

[0041] 1. Addition

[0042] (1) Digital alignment dialing method

[0043] a+b First move a to the display box, then find the number a on the fixed scale, move the number b on the moving scale to align with the number a o...

example 5308

[0045] Example 5308+6092:

[0046] First dial 5308 (stored number) in the display box, and then dial thousands place 6, reverse direction (if there is no way to dial upward to align 6 and 5, use the reverse direction) and move the ruler downward to align 6 and 5, the reverse direction of addition is required Enter 1 to the previous digit (thousands digit); then dial 9 for the tens digit, and move the ruler 9 up so that 9 can reach the display frame (the display frame is also the position corresponding to the fixed-scale number 0); then reversely dial 1 Digit 2 and 8 are aligned, and in the reverse direction, carry 1 to the tens digit, and reversely dial 1 to the tens digit (dial the carry digit 1 to align with the fixed length 9), and then advance 1 to the hundreds digit, then the display box automatically displays the number 11400.

[0047] (2) Abacus dial method

[0048]Simple example 7+8 firstly dial 7 to the display box, and then move the moving ruler up 8 spaces (additio...

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Abstract

The invention provides a number calculation ruler including a long ruler and a short ruler. Two groups of natural numbers from 0 to 9 are marked on the long ruler successively. A group of natural numbers from 9 to 1 are marked on the short ruler successively. The long ruler and the short ruler can slide with respect to each other. The number calculation ruler can easily realize the calculation of addition, subtraction, multiplication and division, and has the advantages of convenient carrying and no energy consumption.

Description

technical field [0001] The invention mainly relates to a calculation tool in the field of mathematics, in particular to a digital slide rule. Background technique [0002] The calculation tools used in traditional mathematical calculations are generally calculators, abacus, slide rules, etc., but if only calculators are used, especially for children and primary school students, their calculation ability will be greatly affected, and it is necessary to Batteries have energy consumption; and the abacus has been gradually eliminated due to its large size, inconvenient carrying, and inconvenient use. A slide rule, in its most basic form, uses two logarithmic scales for multiplication and division, common operations that are time-consuming and error-prone when performed on paper, with the disadvantage of not being able to perform addition and subtraction, Addition and subtraction must be performed with an abacus or other aids. Contents of the invention [0003] In order to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06G1/06
CPCG06G1/06
Inventor 张可成
Owner 张可成