Animated Sign

Basic System Diagram
INPUT 1
A Mechnaical switch - such as the Push Button and its variations 
OR
INPUT 2
Set 4046 VCO Rm (pin12) to give a steady output at 1 Hz
 
PROCESSOR 1
RC1
Controls the Timing of the Roll-Down
PROCESSOR 2
4046-VCO
 
PROCESSOR 3
4017 
Walking Ring Decade Counter to control LEDs
 
PROCESSOR 4
Timed Off
as a power saver.
RC3 Controls the Transistor that cuts powere to the LEDs
 
 
OUTPUT
LEDs
5 sets of LEDs connected in Parallel
 

Graphic System Diagram