LED Displays

As a member of the Chelmsford & District MRC we are in the middle of building a new  O gauge layout, as part of the we wish to make a digital LED display of four digits. This display is intended to display the DCC identification of the next train ready to leave the fiddling yard.
We the members are well passed retirement age when schooling was before the days of electronics so we ask.

Can any body help us with a design and component list of such device. All the components are readily available here in the UK. 

Basically we are looking to be able to input the number either by a simple key pad or four rotary switches please contact me should anybody need further information.

Norman Young
hillview43@hotmail.co.uk  

panic mode9 days ago
panic mode9 days ago

there are ready voltmeter modules (3 or 4 digits). using simple potentiometer one can control displayed value.