it is about the first monitor displays.

Hello there. my name is derick. i hope that you will be able to help me with a rather unique question i think. it is ok if you can't answer this question because the website looks a bit like for solving technical problems rather than history of computers. so i wanted to ask a question regarding the foundation of personal computers. would you happen to know about the first pcs. i was curious about how they created the different structures or shapes of alphabets, symbols for display on the monitor in the early days. like how would they calculate or make a binary solution for a letter, symbol, etc to be understood by computer and displayed on the monitor or stored in the memory. did they scan the drawing, or use a sketch pad to automatically store it in the memory. or how else would they have made it happen. By the way I am not asking about how monitors work but just about the binary solution to fonts, symbols, etc. your answer would be most helpful. I shall look forward to your reply. Thank you