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Secondary storage devices

By Hamish and Adam. Secondary storage devices. Units of measurement for computer data. Normal storage capacities in the modern day. Floppy disc. CD/DVD. Normal SD card memory stick capacities. Internet Storage. HDD/EHD capacities. In perspective… . Size of a floppy disc?

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Secondary storage devices

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  1. By Hamish and Adam Secondary storage devices

  2. Units of measurement for computer data

  3. Normal storage capacities in the modern day Floppy disc CD/DVD Normal SD card memory stick capacities Internet Storage HDD/EHD capacities.

  4. In perspective… Size of a floppy disc? In their latter years, these held about 200MB. When first released in the 1970s, how much do you think they originally held? 1.5MB! This is the size of about 15-20 small Word documents

  5. In perspective… Size of an SD memory card? Nowadays, you can buy an SD card of up to as much as 64GB on it. But when they were first brought into use, what was their lowest capacity? 32MB and 64MB About 0.2-0.4 seconds of HD video.

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