They may include the facility of a lot of different types, be like microprocessor, small controller, DSP, RAM, EPROM, FPGA, A/D, D/A and I/O.

• 它们可能包含许多不同类型的设备，如微处理器、微控制器、DSP、RAM、EPROM、FPGA、A/D、D/A和I/O。