144 Part 2 The instruction-set processor: main-line computers
Section 1 Processors with one address per instruction
This great complexity of terminal equipment requires a flexible switching system. There is a single in-out register (IOR) through which most of the data passes.
There is a switch which is set up by an order to select the desired piece of terminal equipment. Other orders put data into IOR or remove data from LOR. The in-out control provides the necessary control pulses to go with each type of equipment. In general the computer continues to run during terminal equipment wait times; suitable interlocks are provided to prevent trouble. This complete equipment has not yet been fully installed.
References
Whirlwind: EverR51; SerrR62; TayIN51.
EdSAC: SamuA57; WilkM56.