History of IT Departments It is no secret that computers crunch numbers. So, it was natural that one of the first fields in which they were widely used was accounting. Computers probably have saved billions in dollars over the years by making accountants’ lives easier. It was therefore natural, for many years in business, to consider the computer department, or in modern parlance, the IT department, part of Accounting. We’re here to tell you that it is time to ditch this archaic concept, and your business may depend on it.