Description

                   This Interface Board allows you to control a 7 segment LED display using an Arduino / any microcontroller  using  Only 4 data pins  with Multiple Displays  ( 2)   based on Serial in Parallel out Shift register 4094 Based  ( N no of Displays can be connected  in Series)  - ULN 2803 used to Drive  2.2" Display 

Features

•    3 Wire Communication .
•    Low Pin Microcontrollers Very easy to use displays