Subject:
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Re: 7-Segment multiplexing
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 4 Jul 1998 15:34:58 GMT
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Original-From:
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Jeff Morehead <MOREHEAD@ECE.UTEXAS.EDUnospam>
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Viewed:
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1105 times
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There are plenty of seven seg driver chips out there that you can connect to
the HB. Look some up on the web (data sheets are all over the place! try a
search engine). I have experience with a nice chip that drives four seven
segs with serial input, thus saving on I/O from the HB. It is the Motorola
MC14499P.
hope this is helpful,
jm
EVA-01 wrote:
> Hi, does anyone know how to efficiently multiplex 5 seven-segment
> displays? What I'm doing now (turn on the segment drive, turn on the
> digit drive, turn off everything, repeat) causes rather unacceptable
> flicker and has the displays at different intensities.... Please help, I
> know that there are ways to effectively multiplex without flicker. The
> segments are connected to HC374's at 0x4000 and the digits are at the
> lower 5 bits of 0x5000. Thanks!!
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Message is in Reply To:
 | | 7-Segment multiplexing
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| Hi, does anyone know how to efficiently multiplex 5 seven-segment displays? What I'm doing now (turn on the segment drive, turn on the digit drive, turn off everything, repeat) causes rather unacceptable flicker and has the displays at different (...) (26 years ago, 3-Jul-98, to lugnet.robotics.handyboard)
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