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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 0100:  Hard Drives

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IV  First Hard Drives
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 VI  Older Hard Drive Technologies and Interfaces
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V  What is a Hard Drive?

A Hard Drive is a storage device for your computer that is used to hold your Operating System, programs and data.

You can think of a hard drive like a filing cabinet in an office. It is used to store all of the files that you will need to perform your job.

Hard drives come in many different types and sizes, which we will discuss completely in this chapter.

Hard drives use different technologies and interfaces:

  • Frequency Modulation (FM)

  • Modified Frequency Modulation (MFM)

  • Run Length Limited (RLL)

  • Enhanced Small Device Interface (ESDI)

  • Integrated Drive Electronics (IDE)

  • Enhanced Integrated Drive Electronics (EIDE)

  • Direct Memory Access (DMA)

  • Ultra DMA

  • Small Computer System Interface (SCSI)

We will discuss all these architectures, except SCSI, in this chapter. SCSI is somewhat unique, and has its own long history therefore it is covered in Chapter 0101 – the next chapter.


Previous Topic/Section
IV  First Hard Drives
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Next Page
 VI  Older Hard Drive Technologies and Interfaces
Next Topic/Section

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