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  2. Analog computer - Wikipedia

    en.wikipedia.org/wiki/Analog_computer

    TR-10 desktop analog computer of the late 1960s and early 1970s. An analog computer or analogue computer is a type of computer that uses the continuous variation aspect of physical phenomena such as electrical, mechanical, or hydraulic quantities ( analog signals) to model the problem being solved.

  3. Prostaglandin analogue - Wikipedia

    en.wikipedia.org/wiki/Prostaglandin_analogue

    Prostaglandin analogues such as misoprostol are used in treatment of duodenal and gastric ulcers. [2] Misoprostol and other prostaglandin analogues protect the lining of the gastrointestinal tract from harmful stomach acid and are especially indicated for the elderly on continuous doses of NSAIDs . In the field of ophthalmology, drugs of this ...

  4. Analogue electronics - Wikipedia

    en.wikipedia.org/wiki/Analogue_electronics

    Analogue electronics ( American English: analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels. The term analogue describes the proportional relationship between a signal and a voltage or current that represents the signal.

  5. Quadrature amplitude modulation - Wikipedia

    en.wikipedia.org/wiki/Quadrature_amplitude...

    Quadrature amplitude modulation ( QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used in modern telecommunications to transmit information. It conveys two analog message signals, or two digital bit streams, by changing ( modulating) the amplitudes of two carrier waves, using ...

  6. Analog signal - Wikipedia

    en.wikipedia.org/wiki/Analog_signal

    An analog signal is subject to electronic noise and distortion introduced by communication channels, recording and signal processing operations, which can progressively degrade the signal-to-noise ratio (SNR). As the signal is transmitted, copied, or processed, the unavoidable noise introduced in the signal path will accumulate as a generation ...

  7. Digital audio - Wikipedia

    en.wikipedia.org/wiki/Digital_audio

    Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit sample depth. Digital audio is also the name for ...

  8. Analog-to-digital converter - Wikipedia

    en.wikipedia.org/wiki/Analog-to-digital_converter

    Analog-to-digital converter. In electronics, an analog-to-digital converter ( ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.

  9. Signal generator - Wikipedia

    en.wikipedia.org/wiki/Signal_generator

    Many models offer various types of analog modulation, either as standard equipment or as an optional capability to the base unit. This could include AM, FM, ΦM (phase modulation) and pulse modulation. A common feature is an attenuator to vary the signal’s output power. Depending on the manufacturer and model, output powers can range from − ...