- You have a 7 segment display;
What do you mean by input a series of numbers? How many numbers? One at a time?
Or all in a sequence in which case you have a multi-digit display? How many digits?
- What is the file you are talking about? How is it related to your 7 segment display?
Do you use a micro controller or do you use a PC with a parallel port? Something else?
- How do you input your numbers? With a keyboard? With a serial port?
A schematic would probably clarify what you intend to do.
If you want to display 50 digits at one time then you need 50 SSDs. If you want to display one digit at a time then you need 1 SSD. What is your problem in displaying?