51单片机简介，spi接口的应用范例，对初学者非常有用-About 51 single-chip, spi interface application example, is very useful for beginners

51 SPI 操作源代码 希望对大家有用-51 SPI operation of the source code we hope be useful

ATT7022B c程序代码，mcu采用的是51单片机，程序中包含有SPI 通信及校表代码-ATT7022B c source code, the mcu type is 51 controller, the code contain spi communication and meter calibration.