Digital-computer interface systems

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Abstract
Digital-computer interface design is of vital and increas ing importance in simulation, control, instrumentation, and data processing. Hybrid-computer linkage design deals only with a small facet of the interface world, but reflects many of its problems. This tutorial report re views the important techniques for transferring data and control signals between digital computers and the out side world and discusses, in turn, device selection and control for a party line I/O bus, device control, sensing, interrupts and automatic data channels with direct mem ory access. Interfaces for iterative analog computers, for combined simulation, and for simple graphic displays are described as examples. Finally, special interfaces for random-process measurements and interfaces employ ing an intermediate digital processor are discussed.

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