From the course: Help Desk Handbook for End Users: PC Basics, Hardware, Operating Systems, and Applications
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Storage technologies
From the course: Help Desk Handbook for End Users: PC Basics, Hardware, Operating Systems, and Applications
Storage technologies
- Several episodes ago, we talked about why every computing device needs RAM. A CPU can't remember what it's supposed to be working on from moment to moment, so it needs a really fast, accessible short-term memory. Here's the thing about RAM, though. It's volatile. That means when you turn off the computer, all the data stored in RAM goes poof. So what do you do if you want to, I don't know, store a document for more than a few hours, or while the computer is off? Enter mass storage devices. Mass storage devices come in a variety of shapes, sizes, and technologies. The next episode explores those variations. This episode focuses on the most common mass storage device in a desktop computer, the hard drive. A hard drive is a device for long-term storage. When you power off the PC, the data on the hard drive stays put. It's available when you turn the PC back on. It'll be there until you delete it. Or, if you're unlucky, until the drive dies. Hard drives are measured in two ways:…
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