Teach-ICT OCR GCSE Computing - storage devices, internal storage devices, external storage devices, optical storage, solid state memory, magnetic storage

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Unit A451 Topics

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STORAGE DEVICES

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THEORY

1. Introduction

2. Data storage

3. Internal storage devices

4. External storage devices

1. Introduction

Specification point:

i) Explain the need for internal and removable storage

ii) Describe common storage technologies such as optical, magnetic and solid state drives

iii) Select suitable storage devices and storage media for a given application and justify their choice using characteristics such as capacity, speed, portability, durability and reliability.

Any device which is used to store data is known as a 'storage device'. There are a number of different storage devices, each with their own purpose and use. We will examine each of them in turn over the next few pages.