A device capable of converting impulses from one mode to another, such as analog to digital, or parallel to serial, or from one code to another.

• 一种能够把脉冲从一种方式转换成另一种方式的装置。例如,把模拟数据转换成数字数据,或并行传输转换串行传输,或从一种代码转换成另一种代码。