The CPu e EPU= Central Processing Unit Instruction execution is automatic (tick) find memory address of next instruction (tick) retrieve instruction from memory (tick )decode the instruction (tick) fetch argument from memory if necessary -(tick) execute instruction .(tick) store result in memory if necessary o Internal clock ticks very fast( e. g, 100MHZ 100 million ticks per second) activities are synchronized to start on a clock tick some activities take more than one clock tickThe CPU CPU = Central Processing Unit Instruction execution is automatic ◼ (tick) find memory address of next instruction ◼ (tick) retrieve instruction from memory ◼ (tick) decode the instruction ◼ (tick) fetch argument from memory if necessary ◼ (tick) execute instruction ◼ (tick) store result in memory if necessary Internal clock ticks very fast (e. g., 100MHZ = 100 million ticks per second) ◼ activities are synchronized to start on a clock tick ◼ some activities take more than one clock tick