By the mid-1950's, women running comptometers were almost consigned to obsolescence. IBM and Burroughs, among others, had introduced their accounting machines which largely replaced the comptometer. The comptometer users gradually became keypunch operators, since the input to accounting machines, especially those made by IBM, was pretty much numeric in nature. When I first went to business college (1966), we had to learn how to program accounting machines, creating custom reports for the accountants, before we "graduated" to COBOL. The IBM's were very flexible, and allowed us to create reports in which data could be generated through a wired panel as well as cards. And we could even generate output cards (document originating) for input to the next cycle (balances forward, etc.) However, most of the keypunch input by then was strictly computer oriented, and the old IBM accounting machines mostly bit the dust by the mid-1960's. Card input, however, remained well into the 1980's. When newer input was needed, we had purchased terminals for input to the mainframe. The computer room bosses could then monitor "keystrokes/hour" as a method of judging work flow.
The original comptometer operators not only became the keypunch operators, but they also wound up as accounting clerks in later years as card input went obsolete.