In embedded systems development, currently used mainly and AD768AR datasheet and assembler programming language is C, C + + compiler has been a corresponding, but now use is still relatively small. In a little large-scale embedded software, such as containing the OS, most of the code is written using C, mainly because the structure of C language better, to facilitate peoples understanding, and AD768AR price and there are a lot of support libraries. However, many places still have to use the assembly language, for example, the initialization of the hardware system boot time, including the CPU state setting, the interrupt is enabled, the main frequency settings, and AD768AR suppliers and RAM of the control parameters and initialization, a number of interrupt processing may also be involved in assembly. Another is to use the assembly where the performa...