Simple 10 LED Roullette Wheel
Basic System Diagram
INPUT
A Mechnaical switch - such as the Push Button or one of  its variations 
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
 

Graphic System Diagram