How Many Sausages?
The original use of the hashtag; The number sign was often used in information technology to highlight a special meaning. In 1970 for example, the number sign was used to denote immediate address mode in the assembly language of the PDP-11 when placed next to a symbol or a number. In 1978, Brian Kernighan and Dennis Ritchie used # in the C programming language for special keywords that had to be processed first by the C preprocessor. Since before the invention of the hashtag, the number sign has been called the “hash symbol” in some countries outside of North America.