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Tube🌱Time

oh look it is the 74C915 7-Segment to BCD converter. under what circumstances would you use this? i can think of at least two.
22 February at 2:19 | Open on mastodon.social
9 comments
✧✦✶Catherine✶✦✧

@tubetime automating digital instrument readout? the minus sign is suggestive

also, TRI-STATE®

22 February at 2:43 | Open on mastodon.social
Tube🌱Time

@whitequark yup! that's one use, people would couple these with multi-digit dual slope A/D converter chips. good for adding GPIB or whatever to your existing instrument design

22 February at 2:45 | Open on mastodon.social
✧✦✶Catherine✶✦✧

@tubetime oh, they were making ADCs with 7seg output? makes sense

dual slope?

22 February at 2:46 | Open on mastodon.social
Miles Goodhew
Jonathan Hendry

@tubetime

Preventing the display of 5318008

22 February at 3:33 | Open on iosdev.space
xek

@tubetime Pretty sure the only reason I've used one of those is because it's really freaking weird and we had some in the bins of my high school electronics class.

(In hindsight, I'm mad that they wasted "7474" on some frivolous part that nobody's ever gonna use, when it could've been this. The symmetry of the '74 undoing the '47 is compelling!)

22 February at 3:37 | Open on hachyderm.io
JohnS_AZ

@tubetime Backing data out of a 'display a/d converter' like the ICL7106?

22 February at 3:39 | Open on mastodon.social
Christian Berger DECT 2763

@tubetime An oddball thing to use this is to read data from video signals that are either generated by a camera pointing precisely at a 7 segment display, or one of those early "consumer" OSD chips that use 7 segments.

22 February at 8:38 | Open on f-ckendehoelle.de
snep

@tubetime sometimes that's all you need to make one

22 February at 11:48 | Open on mastodon.social
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