说明：  这是一个单片机程序，编程语言是C语言。使用的单片机是STC12C5A60S2.功能是用单片机的SPI口控制数码管显示。
(This is a microcontroller program, programming language is C language. Microcontroller is used STC12C5A60S2. Microcontroller SPI function is to control a digital display.)