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  2. Pulse dialing - Wikipedia

    en.wikipedia.org/wiki/Pulse_dialing

    Swedish phone with one pulse for 0. In the first electromechanical switching systems, the current pulses generated by the rotary dial on the local loop directly operated electrical stepping switches at the central office. The mechanical nature of these relays generally limited the speed of operation, the pulsing rate, to ten pulses per second.

  3. Capacitive sensing - Wikipedia

    en.wikipedia.org/wiki/Capacitive_sensing

    Capacitive sensors are constructed from many different media, such as copper, indium tin oxide (ITO) and printed ink. Copper capacitive sensors can be implemented on standard FR4 PCBs as well as on flexible material. ITO allows the capacitive sensor to be up to 90% transparent (for one layer solutions, such as touch phone screens).

  4. Piezoelectric sensor - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_sensor

    A piezoelectric sensor is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. The prefix piezo- is Greek for 'press' or 'squeeze'.

  5. Category:Telephone tapping - Wikipedia

    en.wikipedia.org/wiki/Category:Telephone_tapping

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  6. Piezoresistive effect - Wikipedia

    en.wikipedia.org/wiki/Piezoresistive_effect

    It enables the easy integration of stress sensors with Bipolar and CMOS circuits. This has enabled a wide range of products using the piezoresistive effect. Many commercial devices such as pressure sensors and acceleration sensors employ the piezoresistive effect in silicon. But due to its magnitude the piezoresistive effect in silicon has also ...

  7. MAP sensor - Wikipedia

    en.wikipedia.org/wiki/MAP_sensor

    This is commonly referred to as gauge pressure. Boost pressure is relative to absolute pressure - as one increases or decreases, so does the other. It is a one-to-one relationship with an offset of -100 kPa for boost pressure. Thus, a MAP sensor will always read 100 kPa more than a boost sensor measuring the same conditions.

  8. Wiretapping - Wikipedia

    en.wikipedia.org/wiki/Wiretapping

    Wiretapping, also known as wire tapping or telephone tapping, is the monitoring of telephone and Internet-based conversations by a third party, often by covert means.The wire tap received its name because, historically, the monitoring connection was an actual electrical tap on an analog telephone or telegraph line.

  9. SENT (protocol) - Wikipedia

    en.wikipedia.org/wiki/SENT_(protocol)

    The SAE J2716 SENT (Single Edge Nibble Transmission) protocol [1] is a point-to-point scheme for transmitting signal values from a sensor to a vehicle controller. It is intended to allow for transmission of high resolution data with a low system cost.