Storage Devices -- "How it saves data and programs“
- Hard disk drives are internal, a higher capacity drive that also stores the operating system which runs when you power on the computer.
- "Floppy" disk drives allow you to save work on small disks and take the data with you.
Hard Disks
- Speed: Very fast! The speed of a hard disk is often quoted as the "average access time" speed, measured in milliseconds. The smaller this number the faster the disk
- Capacity: Enormous! Often 40/80 Gigabytes. A Gigabyte is equivalent to 1024 Megabytes.
- Cost: Hard disk costs are falling rapidly and normally represent the cheapest way of storing data.
Diskettes (Floppy Disks)
- Speed: Very slow!
- Capacity: Normally 1.44 Mbytes.
- Cost: Very cheap
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Computer