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All data storage in modern times are done on disc, be it a computer hard drive or a CD-R disc. Blu-ray and HD-DVD have upped the ante when it comes to the amount of data that you can hold on a disc, but at some time they will eventually become obsolete. Right now our data [...]

Laptop batteries are rated by, Voltage (V) and Milliamp-hours (mAh). Voltage is the rate at which energy is drawn from the battery and Milliamp-hours represents the capacity of the battery. The Milliamp-hour rating corresponds to the run time of the battery. A battery with a high Milliamp-hour rating, has a relatively longer run [...]