| 1 byte (1B) | | 8 binary digits, a byte can have 1 of 256 possible values |
| 1 kilobyte (1KB) | | 1024 bytes, a side of A4 printed text can be stored in 3 or 4 KB |
| 1 megabyte (1MB) | | 1024 kilobytes - a 3.5inch floppy disc holds about 1.5 MB. a CD holds about 700MB |
| 1 gigabyte (1GB) | | 1024 megabytes, a CD stores 0.75GB, and writable DVD holds 4.7GB |
| 1 terabyte (ITB) | | 1024 gigabytes, this is about the same as 110 commercially produced DVDs |
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| download | | to copy information from another computer |
| upload | | to send information to another computer |
