Very early in my programming career, curious how much "nothing" I could perform in my fraction of a second of IBM 370 job time allotted to me as a beginner, I asked it to print as many periods as it could.
My fraction of a second of time concluded a few minutes after giving my little stack of punch cards to the attendant at the Input Window.
Next came a very loud and very rapid BAM!! BAM!! BAM!! BAM!! BAM!! (for several minutes) from the line printer as 80(?) hammers simultaneously hit 80 periods at 1,100 lines per minute on the rotating letter drum for something over a half million characters.
Nobody seemed to be able figure out how to stop it.
The attendant at the Output Window advised me not to do that again.
My fraction of a second of time concluded a few minutes after giving my little stack of punch cards to the attendant at the Input Window.
Next came a very loud and very rapid BAM!! BAM!! BAM!! BAM!! BAM!! (for several minutes) from the line printer as 80(?) hammers simultaneously hit 80 periods at 1,100 lines per minute on the rotating letter drum for something over a half million characters.
Nobody seemed to be able figure out how to stop it.
The attendant at the Output Window advised me not to do that again.
