>(I admit I could miss the information in the thread) > >What was the speed of tape reader or card reader? >Of course I don't mean the device in motion transported on the wheels, >but rather data transfer in bytes per second. ;-) > >-- >Radoslaw Skorupka >Lodz,
High Speed card readers read all columns of the card at the same time, so they have 80 sensors, and read the card row-by-row, allowing much faster reading. There is no reel of tape that has inertia that has to be controlled on a stop. A card deck is easy to edit, we used to have a hand punch for minor JCL corrections. A damaged card can often be recovered by manual copying. on the plus side for paper tape, you can't get the cards out of order, or drop the deck.. but for general data processing cards win hands down. Dave Wade ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
