PDP11 (brazil)

tis 2012-09-25 klockan 21:09 -0500 skrev Jay West: Edmonson ticket=tickets preprinted with travel info (from-and-to and maybe return) and its individual serial number Size: 1x2 (?) inch Some railway stations had special equipment which was able to on demand print out the proper ticket for a customer and keep tabs on sold tickets. At end of day the clerks took out a report which was then sent of to the accounting department. A station which didn't have this equipment had to requisition a set of a specific ticket. For example: I need: 100 tickets for a grown-up sao paulo-rio de janeiro 3d class single 100 tickets for a grown-up sao paulo-rio de janeiro and back 1st class 40 - child sao p-rio d j single 3d class The tickets arrived sorted on its serial number. every ticket of one type (dest/grown-up/class) has a serial number and if the the clerk always sold his lowest numbered ticket first was it easy to keep tracks on numbers sold. At End-of-day the clerk didnt have to count his remaining tickets, it was enough to look for the number of the lowest numbered ticket. Could the Edmonson expansion card be a printer interface ?