In computer, a device that accepts serial information from a peripheral device, e. g., cassette or keyboard, and presents it to the computer, and vice versa.

• 计算机中的一种设备,接收来自于外部设备(如盒式磁带机或键盘)的串行信息再发送给计算机,也可从计算机接收信息再发送给外围设备。