I have some of those HP smart displays. They are now in an 1980s
industrial controller clock!
~
*mcvei...@gmail.com *
On Mon, Jun 10, 2019 at 6:05 PM Benoit Bleau wrote:
> While looking for the datasheet if the 5082-7500, I came across these
> critters which I also find interesting
>
I have a whole bunch of those -- for sale/trade.
On Monday, June 10, 2019 at 8:05:57 PM UTC-5, Benoit wrote:
>
> While looking for the datasheet if the 5082-7500, I came across these
> critters which I also find interesting
>
While looking for the datasheet if the 5082-7500, I came across these
critters which I also find interesting
https://www.ebay.com/itm/1PCS-HP-5082-7340-DIP-8-5082-73xx-Hex/323318410463
Benoit.
On Mon, Jun 10, 2019 at 8:02 PM Charles MacDonald
wrote:
> On 2019-06-10 7:53 p.m., Terry S wrote:
>
On 2019-06-10 7:53 p.m., Terry S wrote:
The data sheet specifically says LED.
HP at one time made their own LED devices for Calculator and other
displays. Calculators like the HP-35 have HP made LED displays.
eventually - the available devices got better and cheaper and they exited.
--
The data sheet specifically says LED.
On Monday, June 10, 2019 at 12:55:58 PM UTC-5, David Pye wrote:
>
> I wondered if they are little red cap covered filament bulbs rather than
> LEDs. But not possible for me to say for sure...
>
> David
>
> On Mon, 10 Jun 2019, 18:50 robin bussell, >
>
Ah -- I also see the "1", "4" and "7" characters take advantage of that
column, for better formed/placed digits. Very cool.
On Monday, June 10, 2019 at 12:55:47 PM UTC-5, Terry S wrote:
>
> The far right column is part of the matrix as you would expect. It's the
> column adjacent that seems
I wondered if they are little red cap covered filament bulbs rather than
LEDs. But not possible for me to say for sure...
David
On Mon, 10 Jun 2019, 18:50 robin bussell, wrote:
> On 10/06/2019 18:38, gregebert wrote:
> > I cant figure out why there is a duplicate column of LEDs on the far
> >
The far right column is part of the matrix as you would expect. It's the
column adjacent that seems unusual. I guess if the decoding is there for
it, you could illuminate a + sign with that column.
On Monday, June 10, 2019 at 12:38:49 PM UTC-5, gregebert wrote:
>
> I cant figure out why there
On 10/06/2019 18:38, gregebert wrote:
I cant figure out why there is a duplicate column of LEDs on the far
right side.
If you check out the datasheet second page you'll see it's a dot matrix,
not seven seg.
Cheers,
Robin.
--
You received this message because you are subscribed to the
I cant figure out why there is a duplicate column of LEDs on the far right
side.
The IC is probably a custom BCD-to-segment driver specifically for discrete
LEDs. There is only 1 resistor on the board, so the driver IC probably does
the current-limiting.
I'm fairly certain the IC is not
Here is a shorter link: https://www.ebay.com/itm/382998174929
This is quite interesting. It seems that the display unit is quite
small, though. Interesting find!
Cheers
Jens
On 2019-06-10 10:31 a.m., Terry S wrote:
True
Those old LEDs are often deep red and look very nice.
On Mon, Jun 10, 2019 at 09:44 Terry S wrote:
> Yes I get that This group's charter includes all vintage display
> technologies.
>
> On Monday, June 10, 2019 at 11:38:57 AM UTC-5, martin martin wrote:
>>
>> Those do not look like
Yes I get that This group's charter includes all vintage display
technologies.
On Monday, June 10, 2019 at 11:38:57 AM UTC-5, martin martin wrote:
>
> Those do not look like Nixie’s. More like LEDs
>
> On Mon, Jun 10, 2019 at 09:31 Terry S >
> wrote:
>
>>
>>
Those do not look like Nixie’s. More like LEDs
On Mon, Jun 10, 2019 at 09:31 Terry S wrote:
>
>
I switched to a different power supply and it's been running fine so far.
If it happens again I'll try the cap.
Thanks,
David
On Sunday, June 2, 2019 at 6:09:23 PM UTC-4, Terry Kennedy wrote:
>
> On Sunday, June 2, 2019 at 4:44:05 PM UTC-4, David Fleig wrote:
>>
>> I've got a Nixichron
16 matches
Mail list logo
