In addition to its use in radio and television, electronics is used in almost all industries for control functions, automation, and computing. There are so many applications that the broad field of electronics must be considered in smaller areas. Three logical groupings of electronics applications are defined here. Also included is a brief description of some important divisions with some typical job titles for working in the electronics business.
- Communications electronics
- Electric power
- Digital electronics
In automotive electronics, more and more electronic equipment is used in cars for charging the battery, power-assist functions, measuring gages, and monitoring and control of engine performance. Perhaps the most important application is electronic ignition. This method provides better timing of the ignition spark, especially at high speeds.
Industrial electronics includes control of welding and heating processes; the use of elevator control; operation of copying machines; metal detectors and smoke detectors; moisture control; and computer-controlled machinery. In addition, there are many types of remote-control functions, such as automatic garage door openers and burglar alarms. Closed-circuit television is often used for surveillance.
Medical electronics combines electronics with biology. Medical research, diagnosis, and treatment all use electronic equipment. Examples are the electron microscope and the electrocardiograph machine. In hospitals, oscilloscopes are commonly used as the display to monitor the heartbeat of patients in intensive care.
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