182 Part 2 The instruction-set processor: main-line computers
Section 2 Processors with a general register state
(the supplies are normally controlled to about 1% of nominal), although correct running at about 20% reduction has been observed.
Conclusions
The first machine has been computing regularly for only a few months and has been on regular preventive maintenance (about 1 hour per day) for a few weeks. Error-free runs of over 30 hours are common, and at the time of writing there has been no error for 553/4 hours' running. The majority of package replacements are done during routine maintenance.
The packaged method of construction of computers has proved to have great advantages in design, construction and operation.
References
ElliW56a; ElboR53; ElliW51, 52, 53, 56b; FairJ56; JohnD52; MerrI56; Pegasus Programming Manual, Ferranti Ltd., London; Pegasus Maintenance Manuals, Ferranti Ltd., London.