Signal original form to a waveform expressed as a current ("I") or a voltage ("V"), or an electromagnetic waveform, for example, an optical signal or radio transmission. Once expressed as an electronic signal, the signal is available for further processing by electrical devices such as electronic amplifiers and electronic filters, and can be transmitted to a remote location by electronic transmitters and received using electronic receivers. In Electrical engineering programs, a class and field of study known as "signals and systems" (S and S) is often seen as the "cut class" for EE careers, and is dreaded by some students as
Electronic tagging Electronic tagging Electronic tagging is a form of surveillance which uses an electronic device, fitted to the person. For example, an ankle monitor is used for people who have been sentenced to electronic monitoring by a court, or are required to wear a tag upon release from prison. It is also used in healthcare settings with people with dementia and in immigration contexts in some jurisdictions. If the device is based on GPS technology, it is usually attached to a person by a probation officer, law enforcement or a private monitoring services company field officer, and is capable of tracking