newbie

[Taylorgang12]

Hey guys, I'm new to c++ field, so i have some questions that i think you guys might could help me with for a better understanding.
how real-time audio and graphics work within a program. How are they similar and how are they different?
Why is graphics callback has less precise timing than the audio callback?
Do the graphics and audio run in different threads? In either case, explain why.?

Thanks!