throbscottle
Well-Known Member
I designed a latching circuit to encode 16 momentary buttons to bcd, then I found another one on the internet. I haven't had a chance to test either yet.
My version uses R-S flip-flops, creating a small delay to set each flip-flop after they have all been reset (component values are fairly arbitrary at this stage) (and I haven't given it a "zero" button, and missed out the switch symbols since LTSpice doesn't have one)
The AND gate version I found latches using positive feedback, and is from here: **broken link removed**
Both circuits create 2 diode drops between each switch and input.
Question is, which is best?
Cheers
throbscottle
My version uses R-S flip-flops, creating a small delay to set each flip-flop after they have all been reset (component values are fairly arbitrary at this stage) (and I haven't given it a "zero" button, and missed out the switch symbols since LTSpice doesn't have one)
The AND gate version I found latches using positive feedback, and is from here: **broken link removed**
Both circuits create 2 diode drops between each switch and input.
Question is, which is best?
Cheers
throbscottle