Re: Flip Flop Problems
I am running win98, I downloaded it with Netscape 4.77 by
right clicking and "Saving Target". Usually, it should be
saved if I just double click it, but when I do this, it comes
up with junk on my screen. Perhaps post it as a .zip?
--- In firstname.lastname@example.org, "apendragn" <apendragn@e...> wrote:
> > I also tried downloading the CPU pcboard. The .pdf schematic
> > shows a 74hc73, so I wanted to see the pcboard if you changed
> > that for jk-flip flop as well and if you tied pins 1 & 4 to vcc.
> > At the same time, I wanted to see how you routed the traces,
> > incase there was anything seriously wrong. But, I could not
> > open the .pcb file, pcbexpress reported an error, I am using
> > version 3.3.0
> You're the second person who's had problems but I haven't been
> able to duplicate the problem. I've downloaded and executed the
> files from a Linux system and from a Win2000 system.
> What program did you download with? What process did you use?
> It seems likely that the only time I've seen problems like this
> is with FTP in text mode.
- --- In email@example.com, "joshbensadon" <joshbensadon@y...>
> Ed,I'm guessing that Netscape must be recognizing the file as
> I am running win98, I downloaded it with Netscape 4.77 by
> right clicking and "Saving Target". Usually, it should be
> saved if I just double click it, but when I do this, it comes
> up with junk on my screen. Perhaps post it as a .zip?
being of a type that it can read and thus sets out to read
it without downloading. I have similar problems with *.sch
schematic files. Microsoft keeps wanting to treat them as
Microsoft Scheduler files.
- apendragn wrote:
> I copied the design for the clock for theShould work. You did tie the PRESET and CLEAR pins of the 74HCT74 high?
> Elf 03 from another design. This design
> used two inverters for a clock and then
> sent the signal through a D Flip Flop
> whose NOT Q output was sent back to the
> D input. According to the literature,
> the D flip flop should toggle when the
> clock input goes high. However, I did
> not see the clock signal get divided by
> two when I did it this way. Even though
> the input clock signal was fairly good.
> It had a frequency of 3.75 MHz, a high
> input over 4.5 volts and a low input of
> about 0.5 volts, still, the flip flop
> did not divide the signal by two when
> clocked. I used a 74HCT74 for the D flip
If you left them floating (which you could do with the old bipolar
parts, but not CMOS) or grounded them, it wouldn't work.
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