Final answer:
A modem is the device that scans printed information and translates it into electronic impulses for transmission over telephone lines, producing an exact replica of the original document upon receipt.
Step-by-step explanation:
The device that scans printed information, translating it into electronic impulses over telephone lines, which when received is translated back into an exact replica of the original document is known as a modem. This device modulates analog carrier signals to encode digital information for transmission and demodulates signals to decode the transmitted information. The process enables a computer or other device to connect to the internet or send and receive data over telephone lines.