By 2018, the microSD flash memory card (arrow) had 750 times as much storage. In 1991, this hard drive held 670 megabytes. There are eight binary digits (bits) in a byte, but there can also be nine bits per byte in RAM cells that include error correction (see parity checking). The first hard drives in early personal computers held 5MB, and RAM was 64K. For example, a 512-gigabyte (512GB) drive stores 512 billion characters of program instructions and data permanently, while eight gigabytes (8GBs) of RAM holds eight billion temporarily. The first spelling of the word was "bite," but the y was added to avoid misspelling between "bit" and "bite."ĭrives and memory (RAM) are rated in bytes. IBM coined the term in the mid-1950s to mean the smallest addressable group of bits in a computer, which was originally not eight. In the 1950s, IBM coined the terms "byte" and "nibble" (half a byte) to maintain the mastication theme "bit, bite, nibble." The term "bit" for "binary digit" was coined in the 1940s. For numeric data, one byte holds one decimal digit (0-9), two "packed decimal" digits (00-99) or a binary number from 0 to 255. See parity checking.Ī byte holds one alphabetic character such as the letter A, a dollar sign or decimal point. A ninth bit may be used in the memory (RAM) circuits as a parity bit for error checking. It is made up of eight binary digits (bits). This article is provided by FOLDOC - Free Online Dictionary of Computing ( ) byte( Binar Y Tabl E) The common unit of computer storage from desktop computer to mainframe.
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