9 POINT OF SALE TRANSACTION TERMINALS; PLASTIC CARD MAGNETIC STRIP VERIFIERS; KEY BOARD/DISPLAY UNITS; CENTRAL MINI-COMPUTER SYSTEMS; MICROPROCESSOR CONTROLLERS; PERSONAL IDENTIFICATION NUMBER TRANSACTION PADS FOR USE IN DATA ENTRY OR PERSONAL IDENTIFICATION IN DEBIT/CREDIT TRANSACTIONS; PRE-RECORDED COMPUTER PROGRAMS FOR USE IN CONJUNCTION WITH TRANSACTION PROCESSING AND DATA COLLECTION DEVICES, PERSONAL IDENTIFICATION NUMBER TRANSACTION PADS, PRINTING EQUIPMENT AND COMMUNICATIONS WITH HOST COMPUTER SYSTEMS