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调制解调器(Modem)由单词MOdulate(调制)和DEModulate(解调)组合而成。Modem的功能是接收计算机需要传送的数据,将其转换成电话线能够理解和接受的格式(即模拟信号),在接收方再将其转换成计算机能够识别的数字格式以便于对方计算机接收。 使用Modem,可以使我们借助普通的电话线路进入不断发展的在线服务领域,例如Internet、Com-puServe、WWW等等;在有了Modem和Fax软件之后,可以直接通过PC收发传真信息;可以在全球范围内通过电子邮件与亲朋好友或是工作伙伴进行联络;如果有合适的Modem和相应的软件,可以将PC作为一个电话应答机来使用,自动为我们值班;
The modem consists of the words MOdulate and DEModulate. The function of Modem is to receive the data that the computer needs to transmit, convert it into a format that can be understood and accepted by the telephone line (that is, analog signal), and then convert it into a digital format recognizable by the computer so that the other computer can receive the data. Using Modem, we can use ordinary telephone lines to enter the growing field of online services, such as the Internet, Com-puServe, WWW, etc .; with Modem and Fax software, you can send and receive fax messages directly through the PC; can be in the world Within the range by e-mail contact with friends and relatives or working partners; if there is a suitable Modem and the corresponding software, you can use the PC as a telephone answering machine, automatically for our duty;