Look at the LED driver chips from http//www.allegromicro.com . They have 8
and 16 bit devices with current regulated outputs so you don't need
current limit resistors.

Harold

> Hi!
>
> This is my first post, so hello to everyone on the list...
>
> I need to run a bargraph display from a PIC (exact type to be decided, but
> I
> have a range of 16F and a couple of 18F devices lying around).
> The trouble is that due to space constraints, Im not really able to
> squeeze
> a 40 pin device in to the assembly and I dont have many GPIO lines left
> over...
>
> So my intention was to use a serial to parallel shift register to give me
> the required outs from a couple of pins. Trouble is that it seems only 8
> bit
> SRs are common now (and the level meters / bargraph displays are all 10
> part) so I was wondering how other people have done this.
>
> I tried looking through the archives, but I couldnt find anything where
> the
> designer has adopted this approach.
>
> EK
>
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