2 votes 2 votes A modern day machine typically has an atomic TEST AND SET instruction. Why? Operating System gate1988 descriptive operating-system process-synchronization unsolved + – go_editor asked Dec 18, 2016 recategorized Apr 16, 2021 by Lakshman Bhaiya go_editor 663 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.