0x

Translingual Etymology Originated in the notation for hexadecimal numbers in the C programming language (first major revision described in The C Programming Language, published 1978) and its descendants. Developed from an earlier #x used in BCPL, one of the ancestors of C. In BCPL, octal numbers used the # prefix (originally an underlined digit 8̲), which was changed into a preceding zero in B (programming language) B. B did not support hexadecimal literals, but C (which was developed from it) did by reintroducing the BCPL syntax and changing the preceding # (#x) to 0 (0x) by analogy. Symbol mul symbol mul computing Indicates that the number that follows is in hexadecimal. en mul 2007 J. R. Gibson ARM Assembly Language - an Introduction 106 Available RAM using ARMulator or Evaluator-7T extends from 0x8000 to 0xffff while that using the LPC2102 with the Keil tools is from 0x40000000 to 0x40000fff. Related terms mul 0b (binary) mul 0 / mul 0o (octal)