74LS90 replacement

[Paul Perry]

At 08:01 AM 24/03/99 -0700, Ian ijfritz wrote:
 One pretty interesting way is to use the LM3914 LED
>driver chip. Feed a saw in and you get ten separate pulses out. You can
>then weigh and sum them to get an approximation to any waveform.
>
Has anyone actually done this?
Because I think the stages do not go on and off exactly sharply, so that
the eye is led to think the dot is moving smoothly across.
It might still be a good thing, but you might not be getting what you 
would from a more 'precision' setup.
Still, would be a great mod for the MadMouse!

paul perry melb aust