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A slide rule for measuring income parameters and its use method

A slide rule and yield technology, applied in the slide rule field, can solve the problems of inconvenient operation, limited functions, easy to panic and make mistakes, etc., and achieve the effect of strong practicability, improved visual effect and accuracy, and easy portability.

Inactive Publication Date: 2016-03-30
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a calculation tool for calculating income parameters, and at the same time to overcome the inconvenience of carrying the computer or the high cost of the existing computer or calculator when calculating the income parameters in financial management; The device needs to input data multiple times, it is easy to panic and make mistakes, and it is inconvenient to operate for people with poor eyesight or the elderly and has limitations in functions, so as to provide a simple, cheap, easy to carry, and can be used respectively Slide rule for measuring total return, return per unit time, and return time

Method used

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  • A slide rule for measuring income parameters and its use method
  • A slide rule for measuring income parameters and its use method
  • A slide rule for measuring income parameters and its use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention provides a slide rule for calculating total income, rate of return per unit time and income time, comprising a fixed ruler 1, a sliding ruler 2 and a fastening ruler 4, both ends of the fixed ruler and the fastening ruler are fixed by fasteners 3 Together, the slide rule fits between the fixed ruler and the fastening ruler through the chute and can realize left and right twitching. The magnifying glass 5 is set outside the body of the fixed ruler and the fastening ruler and can slide in parallel. It is characterized in that the front of the slide rule That is, the fixed scale and the sliding scale are respectively engraved with numbers, and the fixed scale is the income scale, which can represent the annual, monthly, and daily yield, and can also be expressed as the total income after the final time period. The number at the fixed scale minus 1 Indicates the rate of return of the year, month or day, and its range is (0.004~5.0). The minimum grid spacing of ...

Embodiment 2

[0038] Embodiment 2, using the slide rule of the present invention to measure total revenue.

[0039] Using the slide rule in Example 1, Xiao Wang deposits 20,000 yuan in the bank for one year for regular financial management, and the annual interest rate of lump sum deposit and withdrawal is 3.25%. Find Xiao Wang's total income after 5 years of regular deposits.

[0040] The annual interest rate is 3.25%, and the annual growth rate is 1+3.25%=1.0325;

[0041] Such as figure 2 As shown, hold the fixed ruler and the tightening ruler in hand, and twitch the sliding ruler so that the scale line marked "1" on the sliding ruler is aligned with the scale line of "1.0325" (1+3.25%), which is the annual interest rate plus 1 on the fixed ruler , the scale marked "5" (5 years) on the slide scale corresponds to the scale marked "1.173" on the scale minus 1, which is the total yield for 5 years. Xiao Wang's deposit base is 20,000 yuan, so after 5 years of fixed deposits, it will be: 20...

Embodiment 3

[0043] Embodiment 3, using the slide rule of the present invention to measure the rate of return per unit time.

[0044] Using the slide rule in Example 1, Xiao Li bought Fund A with 100,000 yuan. After 3 years, the net value of the fund is 121,000 yuan. Find the annualized rate of return for Xiao Li to buy the fund.

[0045] After 3 years, the net value of the fund is 121,000 yuan, the base is 100,000 yuan, and the total return rate is: (12.1-10) ÷ 10=0.21;

[0046] Such as image 3 As shown, hold the ruler and the tightening ruler in hand, and twitch the slider to align the scale line marked "3" (3 years) on the ruler with the total yield plus 1, that is, the scale on the ruler is "1.21" (1+0.21), then the scale "1" on the slider scale corresponds to "1.0659" on the fixed scale minus 1, that is, 0.0659 (6.59%) is the annualized annualized rate of return.

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Abstract

The invention relates to a sliding scale for calculating a revenue parameter and a use method of the sliding scale. The sliding scale comprises a fixed scale body, a sliding scale body and a fastening scale body, and is characterized in that the fixed scale body and the sliding scale body are arranged on the front face of the sliding scale and respectively provided with numerical codes in an engraved mode, the fixed scale body is an revenue scale body and can represent the year, month and day revenue rates and total revenue after a fixed period, the sliding scale body is a time scale body, and the units comprise the year, the month, the day, the decade or the century. When the unit time revenue rate and the revenue time are known, the total revenue after the time period runs out can be measured through the sliding scale. When the total revenue and the revenue time are known, the unit time revenue rate can be measured through the sliding scale. When the unit time revenue rate and the total revenue are known, the time required by the total revenue can be measured and obtained through the sliding scale. The sliding scale is easy and convenient to use, low in price, convenient to carry, high in practicability and capable of enabling the total revenue, the unit time revenue rate and the revenue time to be respectively measured.

Description

technical field [0001] The invention relates to a slide rule, in particular to a slide rule used for measuring and calculating income parameters and a using method thereof. Background technique [0002] The slide rule or slide rule was invented between 1620-1630 using logarithmic principles and improved as needed, making it the most widely used mathematical tool before calculators / computers became common. [0003] Although with the development of science and technology, more efficient and convenient tools, such as computers or calculators, have gradually replaced this old-fashioned mathematical tool, but this old-fashioned slide rule is still inseparable in some specific fields. For example, in the field of financial planning, when people invest or borrow money, they often need to know the interest rate to know the income after many years, or the repayment period when they need to know the interest rate and the total amount, and so on. When using a computer for this work, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06G1/06
Inventor 崔敏马春亮
Owner BEIJING UNIV OF TECH