cross-compiler（交叉编译器）
　 A compiler that runs on a different platform than the one for which it produces object code. A cross-compiler runs on a host computer and produces object code for the target.
　　一个运行在不同的平台上的编译器，其中之一能产生目标代码。交叉编译器在主机上运行并且产生目标机的目标代码。

 DMA（直接内存访问）
　　Direct Memory Access. A technique for transferring data directly between two peripherals (usually memory and an I/O device) with only minimal interventi on by the processor. DMA transfers are managed by a third peripheral called
　　a DMA controller.
　　直接内存访问。一种直接在两个外设（通常是内存和I/O设备）之间进行数据传输的技术，它只要处理器最少的介入。DMA传输由叫DMA控制器的第三方外设进行管理。

 DRAM（动态随机访问存储器）
　 Dynamic Random-Access Memory. A type of RAM that maintains its contents only as long as the data stored in the device is refreshed at regular intervals.
    The refresh cycles are usually performed by a peripheral called a DRAM controller.
　　动态随机访问存储器。一种RAM，存储在其设备中的数据被定期刷新时才能保存它的内容。刷新周期一般由一个叫DRAM控制器的外设完成。

EEPROM（电可擦的，可编程的只读存储器）
　 Electrically Erasable, Programmable Read-Only Memory. (Pronounced"Double-E"-PROM.) A type of ROM that can be erased electronically.
　　电可擦的，可编程的只读存储器。一种ROM能被电擦除。

EPROM（可擦的，可编程的只读存储器）
　 Erasable, Programmable Read-Only Memory. A type of ROM that can be erased by exposing it to ultraviolet light. Once erased, an EPROM can be reprogrammed with the help of a device programmer.
　　一种可用紫外线擦除的存储器。一次擦除后，EPROM可以在设备编程器的帮助下被重编程。