▍1. ARMandc51
说明: ARM与51编写程序的区别 测试环境:KEIL ARM的空间统一编址,单片机的空间独立编址 ARM没有bool变量,单片机可采用bit变量(ARM write programs with 51 different test environment: KEIL ARM room for a unified addressing, single-chip ARM addressing space is not an independent bool variable, the variable bit microcontroller can be used)