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School/Analyse/Periode 2/Week 1.md
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@ -24,4 +24,15 @@ ADD: add numbers
SUB: subtract numbers SUB: subtract numbers
JMP: transfers program control flow to the indicated instruction JMP: transfers program control flow to the indicated instruction
![[example-machine-lang.png]]
# CPU Time vs IO Time
Total time required to run program is: CPU Time + IO Time
Typical time to read from IO: 20ms
Typical time to run instruction: 20ns
CPU can execute up to 200 million instructions while a block is read from a hard disk.
Conclusion: While I/O is executed, CPU is idling.
![[cpu-vs-io.png]]

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