3 Digit Decimal Display Example

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fjames
Posts: 10
Joined: Sun Jan 20, 2019 7:22 am

3 Digit Decimal Display Example

Post by fjames »

This is a 3 digit decimal display I designed for a project I'm working on. It uses ROMs for the 7 Seg decoders. It uses an 8 bit counter to increment the display. The counter itself isn't anything special, but it does have an initialization circuit that took some time figure out. I attached the circuit and the Ocilligram showing the initialization timing. I'm really liking LogicCircuit. Thanks for creating it.
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Display Example
Display Example
Counter Initialization Ocillogram.png (3.94 KiB) Viewed 9043 times
3 Digit Decimal Display Example.CircuitProject
Counter initialization timing Osillgram
(231.33 KiB) Downloaded 799 times
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admin
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Re: 3 Digit Decimal Display Example

Post by admin »

The initialization circuit is right in this forum: https://logiccircuit.org/forum/viewtopic.php?f=3&t=3
But looks like you've nailed it. Good job.
fjames
Posts: 10
Joined: Sun Jan 20, 2019 7:22 am

Re: 3 Digit Decimal Display Example

Post by fjames »

Thanks for the comment. I actually saw that circuit. I found other similar circuits as well. The issue I ran into was it was too fast. I needed more delay in the circuit for it to work. I tried numerous configurations and gate combinations before I found one that worked. I call this this version the "Skip a Beat" initialization circuit. - LOL
Attachments
Skip a Beat Circuit.png
Skip a Beat Circuit.png (11.03 KiB) Viewed 9025 times
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