 | Operators used to work in special large rooms reserved
only for punched card machines. Operators wore white overalls.
|
| Key punch operators were a profession of their own. They
perforated the basic information and changed information on the cards by
using keypunch machines for further processing. Key punch operators were
mainly women. Also visually impaired persons were used as key punch
operators.
|
| Key punch operators worked usually as pairs ; one was doing the
actual perforating while the other was doing a checking perforation after
that. |
