PIC单片机的汇编延时子程序库，默认4M晶振，延时从10u秒到1秒，包含数个可直接使用的延时子程序，方便快捷！-PIC microcontroller assembler delay subroutine library, the default 4M crystal, the delay from the 10u seconds to 1 second, contains several delay subroutine can be