变频器将无线电讯号从一种频率转换成另一种频率的电子装置 An electronic device that converts one frequency of a radio signal to another.
一种低速输入设备，它将图形和图象数据转换成用于数字计算机的二进制数值输入。 A low-speed input device that converts graphic and pictorial data into binary, numeric inputs for a digital computer.
把能量从一种形式转换成另一种形式的装置。在与计算机有关时，这个术语用在磁盘系统中的读／写磁头、扇面标记的检测上，以及用在延迟线存储器的电子或声波脉冲变换器上。 A device for converting energy form one form to another. In relation to computers, the term is applied to a read/write head, to detector of sector marks in a magnetic disc system, and to electronic/sonic pulse converters of delay line memory.
