Editing Context switch (section)

===No context switch needed===
Considering a general arithmetic addition operation A = B+1. The instruction is stored in the [[instruction register]] and the [[program counter]] is incremented. A and B are read from memory and are stored in registers R1, R2 respectively. In this case, B+1 is calculated and written in R1 as the final answer. This operation as there are sequential reads and writes and there's no waits for [[Subroutine|function calls]] used, hence no context switch/wait takes place in this case.