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Digital voltmeters,
frequency counters etc use 7 segment displays to show the result of measurements.
However all the internal electronics use binary (often BCD) for manipulation of the data. To convert this binary to a form that can be used by the display requires the use of a DECODER, in this case a "BCD to 7 segment display decoder". This has four inputs for the BCD and seven outputs for the display. Other types of decoder are available such as binary to decimal. |
