Prior to the execution the instructions are transported to a cache unit using a bus. There they spent their last moments waiting for the execution. Just before the execution the instruction is separated into several pieces. The execution isn't always fast and painless. On crude hardware the execution of a complex instruction can take as long as 150 clock cycles. Scientists are working on shorter execution times.
Microsoft endorses the needless execution of instructions with their products like DOS(tm), Windows(tm), Word(tm) and Excel(tm). It is more humane to use software which minimises the executions. Modern machines use several units to execute multiple instructions simultaneously. This way it is possible to execute several hundred million instructions per second. The time is near when there will be no more instructions to execute. ACT NOW! Before it's too late
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