Research Of Embedded Equipment System Based On Input Method

In embedded equipment input system, In order to realize the Pinyin, stroke, English, numbers and special characters input, At the same time, the realization of the various input method the switching between the modes.Runs on small embedded devices input method system should not only consider the MCU flash and RAM size, but also consider system portability. On the basis of the two points. It is necessary to consider the input method of the stability of the system itself, How to improve the input frequency, Through profession font chip SPI Port to communicate with the MCU, in order to be able to call out the font chip in Chinese characters or character font, Due to the presence of font chip to reduce the input method of Chinese characters or character called system itself occupied MCU memory size. On this basis font chip are also included in the input table. The input table includes phonetic input method, stroke input method of the present, in pinyin and strokes input method the separately includes respective Association Chinese characters and high frequency words, in order to improve the input method system with Chinese characters Pinyin and stroke pattern cut frequency, At the same time the input method system by transcoding table functions can also be called GB2312and UNICODE two sets of character system of Chinese characters, so the input method system can call all of simplified and traditional Chinese characters.This article through the core module of MCU, font chip module, module, LCD module and RF module is designed into small embedded devices model. After in the MCU download input method program, through the SPL,Button,LCD and RF interface function keys, so the small embedded devices with edit, send a message function.