JSS2: COMPUTER STUDIES – 1ST TERM Computer Memory II: Secondary Memory (Backing Storage) | Week 4 Summary – Computer Memory II

Lesson 4, Topic 2

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Summary – Computer Memory II

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Summary (secondary storage)

Summary:

Some examples of secondary storage devices (an additional memory used to hold a large amount of information outside the main memory) are hard disks, CDs, Zip, flash drives, and floppy disks.

Secondary memory is used to hold numbers, characters, and information as opposed to cassette tapes.

Another name for the hard disk is the fixed disk.

A hard disk holds more information than a floppy disk or flash disk, and the capacity is measured in GB.

Zip disk is used primarily as a backup.

A flash drive is found to be resistant to scratches, dust, breaks, or mechanical failure.

The floppy disk is sealed inside a jacket as a protective coat in a square shape.

Diskettes used to be the media through which we collect data, for subsequent transfer to another system. It has become obsoleteno longer produced or used; out of date. More, out-of-date, and old-fashioned.