In the Mad Men Season 7 Episode "The Monolith", the Agency SC&P are installing the IBM System/360 Computer and especially the Creative Department seems very upset about that. But it seems strange to me that the acquisition of a computer for an advertisement agency would be a problem of competition for the creatives. After all computers (just as today) are pretty bad in making appealing art. If at all it should render the jobs of full-time data-analysts and accountants redundant as their data can be processed faster and better. Such is also the explanation of the IBM System/360 of ACM's Mad Men 60s Handbook and a Harvard Business Review article.
Setting the psychotic reaction of Michael Ginsberg aside, from the viewers perspective it is still mostly the people working in the Creative Department that seem upset by the installation of the computer. Adding to that, from my perspective it is never really explained in the series why the agency would need a computer in the first place. The story-wise explanation is that in a meeting with a client Harry Crane lied in saying that they already had a computer, a resulting inquiry by the Washington Post was then used as a pretence to actually getting one.
So the questions are: Why would SC&P need a computer? And why would that upset the Creative Department, iff their jobs wouldn't really be affected?