February 06,
2002
UCR CS269:
Hardware/Software Engineering of Embedded Systems
How the Purpose was met and the logic behind
it
•The purpose was met by measuring the current drawn by the processor as it repeatedly executes certain instructions or short instruction
sequences.
•The reason this works is due to that fact that despite modern processors being extremely complex systems of several interacting blocks the internal complexity is hidden behind a simple interface—the instruction set.