Computer Literacy is one of the preferred skills for every  professions. The knowledge required varies from fields to fields. If you are opting for Observational Science or subjects which contain dealing with data then knowing atleast a programming language such as Python, c++ etc will be preferred as in the curriculum of subjects like Physics, Mathematics, Psychology etc includes this skills as in there subjects. Now if you are from hardcore arts then you may not need to know a lot of computer but you must be aware of word, excel etc in order to track & maintain records of students. If you are going to be a professor of Commerce then you need to atleast know the softwares such as Tally Erp which are usually included in the curriculum.

So its dependent on the college & subject for which you are becoming the Assistant professor in the college.

I hope this answer provides you some insight. Wish you a great eve!