The 402 pictured was an “accounting machine,” taking a stack of punched cards, doing some simple totalizing math, and printing out journals and statements.
It was “programmed” by a panel with hundreds of jack holes into which you plugged up to a couple hundred patch wires to do the appropriate column arrangements and totalizer functions. The panels were on frames which were removable, so you could have a shelf of them ready for whichever run you needed to make.
The 402 was little sister to the 407, which I helped to maintain on a couple of occasions (in 1963, mind you).
It’s a wonder they can still maintain that stuff. An IBM field office held a very large stock of exotic bits and pieces for these monsters back in the day, but that’s all long gone by now.
The next year we had gotten a Honeywell mini-computer that was still programmed with data cards. We had problems with the cards swelling up due to humidity, and the computer was considered stae-of-the-art, it allowed us to program in FORTRAN and COBOL.