Modem 中文称做“调制解调器”。它的功能是能够将计算机输出的信息转化为普通电话线可以传送的模拟信号和把对方由电话线传来的信息转化为计算机可用的数字信号,从而达到利用电话线传送信息的目的。在选购 Modem 时,首先应考虑它的兼容性。因为,大多数用于通讯的软件都是以“贺氏”Modem 为标准的。所以,选购 Modem 时一定要注意它与“贺氏”的兼容。其次是传输率, Modem Chinese called “modem ”. Its function is to convert the computer output information into analog signals that can be transmitted by ordinary telephone lines and convert the information transmitted from the other telephone lines into digital signals available to the computer so as to achieve the purpose of using telephone lines to transmit information. Modem in the purchase, the first consideration should be its compatibility. Because, most of the software used for communication are based on “Hertz ” Modem as the standard. So, when buying Modem must pay attention to it and “He’s ” compatible. Followed by the transmission rate,