STC12系列单片机源代码，包括软定时器、SPI接口、UART接口等等功能，方便使用-STC12 MCU source code, including soft timers, SPI interfaces, UART interfaces, and so user-friendly features

keil下的基于STC12C5A系列单片机的利用spi协议的无线模块收发函数-keil the next series of microcontrollers based on the use of STC12C5A spi protocol wireless transceiver module function