SHT21为湿度感应芯片，提供中文版PDF 单片机AVR 使用模拟I2C接口，与SHT21通信 代码测试OK。 -SHT21 the humidity sensor chip, providing the Chinese version PDF AVR microcontroller using the I2C interface, analog, and SHT21 communications code test OK.

SHT21的C8051F020代码，测试可用，使用模拟IO口实现的I2C-SHT21 the C8051F020 code, tested, implemented using analog IO I2C port

使用 IO 口模拟IIC通讯的温度IC SHT21 驱动代码 MCU MSP430-SHT21 driver C source code for MSP430