In addition to the innovations in the manufacture of automation systems and nport, significant advancements have been made in the markets for telecoms, transport, industry and consumer products. Any of the most important implementations are discussed in this section.
Other Communication Systems
Other communications systems automation applications include local area networks, satellite communications, and mail-sort machines. The LAN network operates as an automated telephone company, in one building or group of buildings. The local area networks are generally capable of transmitting not only voice but also digital data between system terminals. Satellites are now essential for communicating telephone or video signals over great distances. Such communications would not be possible without automated guidance systems that put and maintain the satellites in predetermined orbits. In many post offices around the world, automatic mail-sorts were developed to read codes on envelopes and sort the envelopes by destination.
One of the first practical control systems, telephone switching was. The first switching devices, invented towards the end of the 19th century, were essentially mechanical switches operated over the phone by a user pressing buttons and turning a knob one clock over. Modern electronic telephone switching systems are based on advanced digital computers that perform tasks such as monitoring thousands of telephone lines, determining the lines required for service, saving the numbers of each telephone number, establishing the necessary connexions, sending electrical signals to the telephone ring of the receiver.
Track the call, and disconnect the phone when the call is done. These devices also help relay payment details and other statistics about the telephone company’s activities in relation to time and toll call charges. In addition to the various above-mentioned functions, the latest electronic systems often automatically move calls to alternative numbers and call back the user when busy lines are freed and serve other customers based on dialled code. These devices also perform practical self-checks, detect problems as they exist and print thorough instructions for repairing them.