Chapter 6. Memory
Computers use memory, also called main memory or RAM (Random Access Memory), to store active programs—including antivirus scanners and other background services—and the data the system is using at the moment. Data can be written to and read from RAM extremely quickly—roughly a million times faster than a hard drive—but data in RAM is retained only while the system is running. RAM costs hundreds of times more than hard disk storage, byte for byte, so RAM is not an economically practical substitute for hard disk storage.
The characteristics of RAM and hard disk storage ...
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