36 seven segment display with pic.. need advise..

[Mike K8LH]

74hct164

There are many many ways to do it. The simple 8-pin interface example below will drive up to 42 displays and the display driver ISR only uses about 5% processor "overhead" (about 50 usecs each 1 msec interrupt). A version with 9-pin interface can drive 56 displays and a version with 10-pin interface can drive 64 displays.

* the driver IC is a Micrel MIC5821 or Allegro A6821. these are 8 bit serial-to-parallel 500-ma sinking driver ICs (overkill in this application).

Regards, Mike

 

[asokacolambage]

max7219 uln2803 pic

Hellw,

I need to do a electronic design for un dergraduate progrome If you have such idea please help me.

asoka