Match the type of secondary storage devices to their examples. CD
hard disk
flash memory
magnetic storage devices
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optical storage devices
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solid-state storage devices
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1. CD: optical storage devices.

2. HDD: magnetic storage devices.

3. flash memory: solid-state storage devices.

Explanation:

A storage device can be defined as a computer hardware that is typically used for the storage of data or any computer related information such as images, videos, texts, music, codes and folders.

Some examples of storage devices used in the field of computer science are;

1. Optical storage devices: it is circular in shape and includes compact disk (CD), DVD, Blu-ray disk etc. A compact disc (CD) is a small digital-optical disc that is used to store computer data using a laser beam. It is able to store digital data because it is made up of a polycarbonate (a tough-brittle plastic) with one (1) or more metal layers.

2. Magnetic storage devices: this is one of the most widely used storage devices and it comprises of hard disk drive (HDD), floppy diskette, magnetic strip etc.  

3. Solid-state storage devices: it is typically made up of integrated circuits and uses flash memory to store data.