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Groups > sci.electronics.design > #457949
| Subject | Re: Binary counter - please check my work |
|---|---|
| Newsgroups | sci.electronics.design |
| References | <l1QMA.1138$aC3.305@fx02.iad> <oe0iha$10b$1@dont-email.me> <l1TMA.48233$uf1.15437@fx40.iad> <oe0vro$ogs$1@dont-email.me> |
| From | bitrex <bitrex@de.lete.earthlink.net> |
| Message-ID | <YRUMA.1140$aC3.868@fx02.iad> (permalink) |
| Organization | frugalusenet - www.frugalusenet.com |
| Date | 2017-04-29 00:43 -0400 |
On 04/28/2017 11:07 PM, Don Y wrote: > On 4/28/2017 7:39 PM, bitrex wrote: >> On 04/28/2017 07:20 PM, Don Y wrote: >>> On 4/28/2017 4:14 PM, bitrex wrote: >>>> I'd like to have a 74HC163 4-bit counter count the following sequence: >>>> >>>> 1000 >>>> 1001 >>>> 1010 >>>> 1011 >>>> 0100 >>>> 0101 >>>> 0110 >>>> 0111 >>>> >>>> So A, B preset inputs grounded, C, D preset fed back from the outputs >>>> C, D >>>> swapped, synchronous preset enable pin (active low) NANDed from A >>>> and B? >>> >>> Why not just use the three LSb's of the counter "as is"and inverting the >>> most >>> significant of those (with your NAND gate) to form the MSb (of four)? >> >> Ah, indeed, indeed. >> >> DUH. >> >> This is why I ask...;-) > > 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. "El Cheapo" 2 switch sample and hold is my ideal, but I don't know that it's possible: <https://www.dropbox.com/s/t1lkycctbqojpt5/20170429_003617.jpg?dl=0>
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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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