(2) When applied to computers, which use the binary notation system, giga represents 2 to the 30th power, which is 1,073,741,824, a little more than 1 billion. A gigabyte, therefore, is about 1.073 billion bytes.
(1) When decimal notation is used, giga stands for 10 to the 9th power. For example, a gigavolt is 1,000,000,000 volts.
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.