Punch cards for 1940 US Census. US Census Bureau employee translating handwritten information on the census schedule to holes on a punch card using a 'card puncher'. The punch cards are then sorted and tabulated. This is being done for data from the 1940 US Census. At the time,these machines were the latest in a series of machines used to record and collate census data,ranging from mechanical sorters and tabulators,through to modern electronic computers | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US Census Bureau |
Bildgröße: | 3528 px × 2492 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |