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A REALTIME INTRODUCTION
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allocated Application Programs automatic cause central processing unit channel Chapter characters coding communication lines completed core load core storage debugged detected diagnostics disk drum dump duplexed example executed fall-back file addressing file records file references functions grams handle hardware index registers input/output units instructions interrupt occurs large number Line Control Computer Line Control Unit logic machine macro macro-instructions magnetic tape main computer Main Scheduling Routine Message Reference Block mode multi-thread multiplexor necessary needed non-real-time normally off-line on-line on-line system overflow permanently in core Phase pocket possible priority routine problems processing unit program segment program testing Project Mercury queue random random-access files read-in real-time computer real-time system reference number Reference System request scanning sequence simulation stored subroutines Supervisory Programs Supervisory routine switchover tape techniques terminal tion transactions transfer control Transfer Table updated waiting watchdog timer written