Chapter 8 Secondary Storage

Chapter 8 Secondary Storage

The storage have two kind of:

1.       Secondary storage: sometimes called auxiliary storage, is all data storage that is not currently in a computer's primary storage or memory. An additional synonym is external storage. 

2.       Primary storage:  (or main memory or internal memory), often referred to simply as memory, is the only one directly accessible to the CPU. The CPU continuously reads instructions stored there and executes them as required. Any data actively operated on is also stored there in uniform manner.

Secondary storage:

–    Nonvolatile storage

–    Permanent storage

Secondary Storage Devices

•    Optical disks – large storage capacity (Key Term)

•    Hard disk – large storage capacity and fast retrieval times