Week 6:Communication and Network


Computer communications describes a process in which two or more computers or devices transfer data, instructions, and information. Figure 8-1 shows a sample communications system.Some communications involve cables and wires; others are sent wirelessly through the air. communications systems contain all types of computers and computing
devices. For successful communications, you need the following:
• A sending device that initiates an instruction to transmit data, instructions, or information.
• A communications device that connects the sending device to a communications channel.
• A communications channel, or transmission media on which the data, instructions, or information travel.
• A communications device that connects the communications channel to a receiving device.
• A receiving device that accepts the transmission of data, instructions, or information.