What is the most capacious way to transfer data via UART between an 8-bit microcontroller and a PC?

Question

Microcontrollers

Hello,
I would like to know how to universally transfer integer data between the MK and the computer? I'm currently using atoi/itoa or fprintf, but it feels like 8 times the required bits to run.

Answer 1

Well, integers are stronger than in binary form, especially not to shrink. :)
Raise the transmission speed. If the line is long and the uart is buggy from speed, then go to LVDS or RS-485 between USB and MK.

Answer 2

integer data

Move away from ASCII