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  2. Differential Manchester encoding - Wikipedia

    en.wikipedia.org/wiki/Differential_Manchester...

    Differential Manchester encoding (DM) is a line code in digital frequency modulation in which data and clock signals are combined to form a single two-level self-synchronizing data stream. Each data bit is encoded by a presence or absence of signal level transition in the middle of the bit period, followed by the mandatory level transition at ...

  3. Mercury pressure gauge - Wikipedia

    en.wikipedia.org/wiki/Mercury_pressure_gauge

    An open (differential) mercury pressure gauge. A mercury pressure gauge is a type of manometer using mercury as the working fluid. The most basic form of this instrument is a U-shaped glass tube filled with mercury. More complex versions deal with very high pressure or have better means of filling with mercury.

  4. Differential pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Differential_pulse-code...

    Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal .

  5. Pressure measurement - Wikipedia

    en.wikipedia.org/wiki/Pressure_measurement

    A single-limb liquid-column manometer has a larger reservoir instead of one side of the U-tube and has a scale beside the narrower column. The column may be inclined to further amplify the liquid movement. Based on the use and structure, following types of manometers are used [20] Simple manometer; Micromanometer; Differential manometer

  6. Differential coding - Wikipedia

    en.wikipedia.org/wiki/Differential_coding

    A differential encoder provides the operation, a differential decoder - the operation. Both differential encoder and differential decoder are discrete linear time-invariant systems. The former is recursive and IIR, the latter is non-recursive and thus FIR. They can be analyzed as digital filters.

  7. Digital differential analyzer - Wikipedia

    en.wikipedia.org/wiki/Digital_Differential_Analyzer

    A digital differential analyzer (DDA), also sometimes called a digital integrating computer, [1] is a digital implementation of a differential analyzer. The integrators in a DDA are implemented as accumulators , with the numeric result converted back to a pulse rate by the overflow of the accumulator.

  8. Differential signalling - Wikipedia

    en.wikipedia.org/wiki/Differential_signalling

    When driven in differential mode by two identical amplifiers, this impedance change will be the same for both lines, and thus cancelled out. [1] Differential signalling works for both analog signalling, as in balanced audio, and in digital signalling, as in RS-422, RS-485, Ethernet over twisted pair, PCI Express, DisplayPort, HDMI and USB.

  9. Line code - Wikipedia

    en.wikipedia.org/wiki/Line_code

    the line-coded signal can directly be put on a transmission line, in the form of variations of the voltage or current (often using differential signaling). the line-coded signal (the baseband signal ) undergoes further pulse shaping (to reduce its frequency bandwidth) and then is modulated (to shift its frequency) to create an RF signal that ...