[sdiy] Art of electronics computer

[Scott Nordlund]

> I have no idea - I thought it was 74 series. This was nearly 30 years ago when I was an impoverished teenager.
7447, I think
>
> On 2012-01-09, at 12:22 PM, mark verbos wrote:
>
> > MC14495?
> >
> >
> > On Jan 9, 2012, at 3:13 PM, Veronica Merryfield wrote:
> >
> >> There were some direct hex drivers at some point. I remember deconstructing the logic patterns for the 4 in to 7 out because it struck me that some of those patterns could be useful and would avoid needing more expensive logic devices in some of the stuff I doing back then.
> >>
> >> On 2012-01-09, at 12:03 PM, Harry Bissell wrote:
> >>
> >>> I think that any direct drive 7 segment display can be considered "hexadecimal". It can display the
> >>> necessary segments to make all the characters in the hexidecimal set.
> >>>
> >>> I don't know of a direct 'hex' driver chip that takes 4 bit binary and outputs this character set. There ~was~ one (once)
> >>> for hex on an LCD display.
> >>>
> >>> The CD4511 is a good example of a driver that will NOT display hex characters. The "a" - "f" are blank...
> >>>
> >>> H^) harry
> >>>
> >>>
> >>> ----- Original Message -----
> >>> From: Dan Snazelle 
> >>> To: Steve Galle 
> >>> Cc: synthdiy diy 
> >>> Sent: Mon, 09 Jan 2012 14:48:37 -0500 (EST)
> >>> Subject: Re: [sdiy] Art of electronics computer
> >>>
> >>> I dont believe that is hexadecimal
> >>>
> >>> Sent from my iPhone
> >>>
> >>> On Jan 9, 2012, at 2:31 PM, Steve Galle  wrote:
> >>>
> >>>> Something like this?
> >>>> http://parts.digikey.com/1/parts/1631661-led-7-seg-7-6mm-ca-he-red-hdsp-7501-cd000.html
> >>>>
> >>>> On Jan 8, 2012, at 1:32 PM, David G Dixon wrote:
> >>>>
> >>>>>> They specify the HP 5082-7340 but i think others would work.
> >>>>>> Anyone know where to find those cheaply?
> >>>>>
> >>>>> AFAIK, it is impossible to find hex displays today. I tried to find some
> >>>>> for a step sequencer thingy I was working on a while ago, and everything I
> >>>>> found was long obsolete and unobtainium. I wanted a 7-segment display
> >>>>> driver that would give 0 1 2 3 4 5 6 7 8 9 A b C d E F out, but this is not
> >>>>> to be had anymore, apparently.
> >>>>>
> >>>>> _______________________________________________
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> >>>>
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> >>> --
> >>> Harry Bissell & Nora Abdullah 4eva
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> >>>
> >>
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