Network Protocols in Digital Communication: "Intelligent" (microprocessor-controlled) switching systems have become the hubs of intelligent networks. Terminal devices and line connection equipment have also been given microprocessor "brains," and thus the introduction of intelligent devices…
Switching Systems in Digital Communication: If only two sites are to be connected, switching is not required. The two facilities are interconnected on a point-to-point basis. However, switching is likely to be required where three…
Centralized Switched Telephone Network: Centralized Switched Telephone Network - As data systems have increased in number and complexity, it has become increasingly important to provide for their proper and orderly interconnection. Small, simple systems could…
Interconnection of Data Circuits: In the United States, a recent FCC ruling, in part 68 of the Rules and Regulations, permits for the first time non-telephone company interconnection to telephone company circuits. This ruling has…
RS 232 Interface Modem: In the United States, a standard interconnection between business machine and modem is supplied by the RS 232 Interface Modem. RS 232 Interface Modem has been defined by the Electronic Industries…
Data Communication Circuit using Modem: Data Communication Circuit using Modem - The name modem is a contraction of the term MOdulator and DEModulator. As the name implies, both functions are included in a modem. When…
Error Detection and Correction Codes: Error Detection and Correction Codes - Errors enter the data stream during transmission and are caused by noise and transmission system impairments. Because errors compromise the data and in some…
Digital Codes Types: Various Digital Codes Types of equipment are used in computer systems to send and receive data: keyboards, video terminals, printers, paper tape punches and readers, paper card punches and readers, and magnetic…
Characteristics of Data Transmission Circuits: Bandwidth Requirements - Characteristics of Data Transmission Circuits is the most instances consists of pulse-type energy. The data stream is similar to a square-wave signal with rapid transitions from one…
Digital Electronics Basics: Digital devices are based on Digital Electronics Basics circuits which can represent two states, ON or OFF. The ability to design integrated circuits consisting of thousands of transistors on wafer-thin; postage-stamp-sized chips…
