The attached diagram is of a seven segment. It is one digit and all numbers can be displayed depending upon which segements are illuminated. These are the normal segments illuminated for the numbers 0 thru 9.
number segments
0 A thru F
1 B and C
2 A,B,D,E,G
3 A,B,C,D,G
4 B,C,F,G
5 A,C,D,E,F,G
6 C,D,E,F,G
7 A,B,C
8 ALL SEGMENTS
9 A,B,C,F,G
The segments can be made with LED's or incandescant bulbs.