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Groups > sci.electronics.design > #458062
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: Binary counter - please check my work |
| Date | 2017-04-29 23:15 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <oe3knd$ee$1@dont-email.me> (permalink) |
| References | (1 earlier) <oe0iha$10b$1@dont-email.me> <l1TMA.48233$uf1.15437@fx40.iad> <oe0vro$ogs$1@dont-email.me> <_CUMA.24965$kF7.13243@fx22.iad> <oe2ss6$q3s$1@gonzo.alcatraz> |
On 4/29/2017 4:25 PM, Jasen Betts wrote: > On 2017-04-29, bitrex <bitrex@de.lete.earthlink.net> wrote: >> On 04/28/2017 11:07 PM, Don Y wrote: >> >>> There are no "steady state" consequences of this. However, the >>> temporal behavior of the "4th bit" will vary near the clock edge >>> as it will be more closely synchronized with the other three bits >>> in the case where the state is set-up *before* the clock edge >>> vs. derived from the TRANSITIONED third bit AFTER the clock edge. >> >> It looked to me like the only sequence of transitions where one can get >> a set of unique bit patterns where some two bits can be ANDed or ORed >> together to get 8 mutually exclusive "1" outputs where the output is "0" >> in all the other states. >> >> But I believe I'm wrong. 4 choose 0 + 4 choose 1 is only 5. > > for > > "8 mutually exclusive "1" outputs where the output is "0" in all the other states." > > use > > CD4022 (counter) > > or > > 74xx328 (3-bit decoder) > > etc. > > > CD4022 may power up in a confused state with 2 outputs high, but a > reset pulse or few clocks will cure that. I'm not totally sure what is being requested, but would a Johnson ring counter do the job? The mutually exclusive 1 outputs is what this type of counter is all about. It would use a 4 bit shift register, an inverter and some logic to detect the various combinations of 10 and 01 adjacent bits. I can't find any info on a 74xx328 device. Did you mean a 74xx138 which is a 3 bit to 8 output decoder? -- Rick C
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Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-28 19:14 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-28 16:20 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-28 19:31 -0400
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-28 22:39 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-28 20:07 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 00:27 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-28 22:44 -0700
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-28 22:46 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-29 10:29 -0400
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 11:07 -0400
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-04-29 20:34 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-29 23:43 -0400
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-04-29 21:53 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-30 01:42 -0400
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-04-29 23:28 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-30 20:10 -0400
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-30 20:26 -0400
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-30 21:07 -0400
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-30 21:20 -0400
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-04-30 18:52 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-05-01 08:43 -0400
Re: Binary counter - please check my work krw@notreal.com - 2017-05-01 13:33 -0400
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-05-01 23:02 -0700
Re: Binary counter - please check my work Jasen Betts <jasen@xnet.co.nz> - 2017-05-02 11:42 +0000
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-05-02 06:10 -0700
Re: Binary counter - please check my work upsidedown@downunder.com - 2017-05-03 03:26 +0300
Re: Binary counter - please check my work pcdhobbs@gmail.com - 2017-05-02 18:41 -0700
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-05-02 19:39 -0700
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-05-02 11:30 -0400
Re: Binary counter - please check my work Jasen Betts <jasen@xnet.co.nz> - 2017-04-29 20:25 +0000
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-29 23:15 -0400
Re: Binary counter - please check my work upsidedown@downunder.com - 2017-05-01 11:12 +0300
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 00:43 -0400
Re: Binary counter - please check my work Winfield Hill <hill@rowland.harvard.edu> - 2017-04-29 05:31 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 09:48 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-29 08:45 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 12:51 -0400
Re: Binary counter - please check my work rickman <gnuarm@gmail.com> - 2017-04-29 14:54 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-29 12:34 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 15:51 -0400
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-29 21:37 -0700
Re: Binary counter - please check my work Jasen Betts <jasen@xnet.co.nz> - 2017-04-29 20:49 +0000
Re: Binary counter - please check my work Don Y <blockedofcourse@foo.invalid> - 2017-04-29 14:08 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 17:31 -0400
Re: Binary counter - please check my work Jasen Betts <jasen@xnet.co.nz> - 2017-04-30 00:51 +0000
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 21:42 -0400
Re: Binary counter - please check my work bloggs.fredbloggs.fred@gmail.com - 2017-04-29 12:17 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-29 15:36 -0400
Re: Binary counter - please check my work bloggs.fredbloggs.fred@gmail.com - 2017-04-30 08:00 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-30 11:13 -0400
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-30 11:24 -0400
Re: Binary counter - please check my work bloggs.fredbloggs.fred@gmail.com - 2017-04-30 08:30 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-04-30 16:06 -0400
Re: Binary counter - please check my work Jasen Betts <jasen@xnet.co.nz> - 2017-04-29 00:04 +0000
Re: Binary counter - please check my work bill.sloman@ieee.org - 2017-04-28 21:14 -0700
Re: Binary counter - please check my work stratus46 <stratus46@yahoo.com> - 2017-05-01 01:51 -0700
Re: Binary counter - please check my work stratus46 <stratus46@yahoo.com> - 2017-05-01 01:56 -0700
Re: Binary counter - please check my work bitrex <bitrex@de.lete.earthlink.net> - 2017-05-01 13:36 -0400
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