i have aaplied increasing voltage to the signal line until each light has lit up and the result are on the side, but what i want to know is that how do i get this result theoretically
because part of my college project work is to show some planning and not do everything by trial and error
so if there a formual that i can use which applies to the schmatic above
i have learnt ohms law its that we havent done anything from scratch from datasheets
most of the time its here is a circuit and then we do a assignment based around it.
and for me its the first time ive ever done a project so its the first time ive actually looked at a datasheet