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bet | 2/11 | Sana | 10.02.2022 | Hajmi | 0,62 Mb. | | #440887 |
| Bog'liq Data storage
Storage types - Primary storage – memory or RAM
- Secondary storage – electromagnetic or optical devices
Storage device components - Storage devices are comprised of
- Storage medium
- Read/write mechanism
- Device controller – interface between the storage device and the system bus (discussed in chapter 6)
Speed - Speed of primary storage (RAM) directly impacts performance of entire system
- RAM extends the limited capacity of CPU registers
- The CPU continually moves data and instructions between registers and RAM
- If a read/write to RAM takes more than one CPU cycle, then CPU must wait for information
- RAM is faster than secondary storage by a factor of 105 or more
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