Portable function arithmetic operation device and method for processing and computing function

Abstract

The invention provides a portable function operation device and the function processing and calculating method thereof, by which not only system functions but also user-defined functions can be processed. The device comprises a microprocessor, a display screen, a keyboard, a memory, a download port and a power module; the microprocessor includes an input module, a function programming module, a function library, a function analyzing and calculating module, a result register, a function name library and an output interface. Compared with the prior art, the invention has a structure suitable for effective function programming and calculating, is capable of meeting high requirements of function programming and calculating, and displaying function expressions and other information; in addition, the invention has ability of exchanging data with the external, which facilitating function expansion; the invention can also effectively calculate accurate floating point numbers and accurate large integrals.

Description

technical field [0001] The invention relates to a function computing device and its processing and computing method, in particular to a portable function computing device and its function processing and computing method. Background technique [0002] At present, the vast majority of algebraic computing systems are applied to personal computers or even mainframes. They are mainly developed for mathematical research, and their application range is narrow and not conducive to portability. Due to the increasing demand for more complex function calculations in teaching and other fields, algebraic calculation systems applied to personal handheld devices have appeared abroad. However, these systems are not only limited by hardware conditions, but some simple function calculations or programming functions are added to lower-level systems, such as limited support for integer and floating-point numbers, incomplete calculation functions, complex key input, and unfriendly interfaces. T...

AI Technical Summary

Problems solved by technology

However, these systems are not only limited by hardware conditions, but some simple function calculations or programming functions are added to lower-level systems, such as limited support for integer and floating-point numbers, incomplete calculation functions, complex key input, and unfriendly interfaces. Not fully functional

At the same time, these products also display relevant function information in English mathematics professional terms, which are difficult for Chinese students to understand and difficult to teach

[0003] The existing portable devices in foreign countries generally have the following shortcomings: 1. The structure adopted is not suitable for function programming or calculation, and lacks an interface for data exchange with the outside world, the scalability is not strong, and the price is expensive

2. Take Ti graphing calculator voyage 200 as an example, it uses a monochrome display, the display effect is not good, and it uses a pure English interface, which is not friendly enough, and the English function names are not intuitive, which is not convenient for Chinese students to use; 3 1. When performing various calculations, the operation steps are very complicated, and its help information is very lacking, and it is difficult for users to get started quickly; 4. It is not possible to freely perform data interaction through the computer as a medium. When the program has a large input volume, the user will waste a lot of time on the input operation.

5. Lack of the ability to efficiently calculate precise large integers and precise floating-point numbers further limits its application in function computing

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