When did the term 'computer virus arise?

The term "virus" was first used in an academic publication by Fred Cohen in his 1984 paper Experiments with Computer Viruses, where he credits Len Adleman with coining it. However, a 1972 science fiction novel by David Gerrold, When H.A.R.L.I.E. Was One, includes a description of a fictional computer program called "VIRUS" that worked just like a virus (and was countered by a program called "VACCINE").The word virus is derived from and used in the same sense as the biological equivalent.

well when programmer developed a software and the people who was jealous by either that programmer or software who may be either their colleagues , relatives or friends who are themselves rated as most talented ! started to find bugs or loop holes in that software and pro gramme and when are able to detect they prepared a code which get into the software and corrupt them or harm whole system ! this code is called virus !

whenever the values of first 1706 byte of a program or an application or of a software a changed by mistake by user or by some external material. and the aaplication is unable to perform his function properly then it is called computer virus arised