TWINCOM

COMPUTERS, COMPUTER PERIPHERALS AND COMPUTER PROGRAMS ALLOWING TO WRITE TWO DISCS SIMULTANEOUSLY AND TO BACK UP AUTOMATICALLY WITH THE PROVISION TO READ THE DISCS ALTERNATELY IN ORDER TO CONTINUE PROCESSING IN CASE ONE OF THE TWO DISCS FAILS; BLANK MAGNETIC DATA CARRIERS IN THE FORM OF DISCS AND TAPES; DATA PROCESSORS; AND DATA BASES RECORDED ON MAGNETIC MEDIUM FOR USE IN COMPUTERS AND DATA PROCESSORS