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  2. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    Analog multimeter Digital multimeter. A multimeter (also known as a volt-ohm-milliammeter, volt-ohmmeter or VOM) [1] is a measuring instrument that can measure multiple electrical properties. [2] [3] A typical multimeter can measure voltage, resistance, and current, [4] in which case can be used as a voltmeter, ohmmeter, and ammeter.

  3. True RMS converter - Wikipedia

    en.wikipedia.org/wiki/True_RMS_converter

    Distortion of a waveform True RMS Multimeter. For the measurement of an alternating current the signal is often converted into a direct current of equivalent value, the root mean square (RMS). Simple instrumentation and signal converters carry out this conversion by filtering the signal into an average rectified value and applying a correction ...

  4. Frequency counter - Wikipedia

    en.wikipedia.org/wiki/Frequency_counter

    Most frequency counters work by using a counter, which accumulates the number of events occurring within a specific period of time.After a preset period known as the gate time (1 second, for example), the value in the counter is transferred to a display, and the counter is reset to zero.

  5. Analog multiplier - Wikipedia

    en.wikipedia.org/wiki/Analog_multiplier

    For example, in early digital multimeters, true RMS functions were provided by external analog multiplier circuits. Nowadays (with the exception of high-frequency measurements) the tendency is to increase the sampling rate of the ADC in order to digitize the input signal allowing RMS and a whole range of other functions to be carried out by a ...

  6. Ohmmeter - Wikipedia

    en.wikipedia.org/wiki/Ohmmeter

    Ohmmeters form circuits by themselves, therefore they cannot be used within an assembled circuit. This design is much simpler and cheaper than the former design, and was simple to integrate into a multimeter design and consequently was by far the most common form of analogue ohmmeter. This type of ohmmeter suffers from two inherent disadvantages.

  7. Cell counting - Wikipedia

    en.wikipedia.org/wiki/Cell_counting

    For example, the complete blood count can help a physician to determine why a patient feels unwell and what to do to help. Cell counts within liquid media (such as blood, plasma, lymph, or laboratory rinsate) are usually expressed as a number of cells per unit of volume, thus expressing a concentration (for example, 5,000 cells per milliliter).

  8. VAX 6000 - Wikipedia

    en.wikipedia.org/wiki/VAX_6000

    The VAX 6000 Model 4x0, code-named "Calypso/XRP", was introduced on 11 July 1989. [1] It used the KA64A CPU module and could be configured with one to six such modules for one to six processors. The KA64A contained a 35.71 MHz (28 ns cycle time) Rigel chip set with an external 128 KB B-cache ( L2 cache ).

  9. Pontiac 6000 - Wikipedia

    en.wikipedia.org/wiki/Pontiac_6000

    The Pontiac 6000 is a mid-size automobile manufactured and marketed by Pontiac from the 1982 to 1991 model years. As Pontiac transitioned to a numeric model nomenclature in the early 1980s, the 6000 replaced the LeMans as the mid-size Pontiac, slotted between the Phoenix (later the Grand Am ) and the Bonneville .

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