What is a block Diagram of facsimile?

A block diagram of a facsimile (fax) machine illustrates the main components and their interactions in the process of sending and receiving documents. Key blocks typically include the scanner, which converts the document into electrical signals; the transmitter, which modulates these signals for transmission over a telephone line; and the receiver, which demodulates the signals back into an image. The output block represents the printer, which produces a hard copy of the received document. This visual representation helps to understand the flow of information and the functional relationships between the components.