Answer:
Binary Code
Explanation:
All microprocessors and programmable devices understand is Binary Code. These are various combinations of 0's and 1's which when placed together in a sequence represent a set of instructions that the microprocessor can read and understand to complete complex tasks. There are various other programming languages to program these tasks in an easier to read syntax for the programmers themselves but they simply take the written code and convert it into Binary before sending it to the microprocessor.
