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1964 Proceedings of the Fifth Annual Symposium on Switching Circuit Theory and Logical Design
New techniques for designing speed independent control logic
November 11November 13
ASCII Text  x  
Robert E. Swartwout, "New techniques for designing speed independent control logic," 2013 IEEE 54th Annual Symposium on Foundations of Computer Science, pp. 1229, 1964 Proceedings of the Fifth Annual Symposium on Switching Circuit Theory and Logical Design, 1964.  
BibTex  x  
@article{ 10.1109/SWCT.1964.15, author = {Robert E. Swartwout}, title = {New techniques for designing speed independent control logic}, journal ={2013 IEEE 54th Annual Symposium on Foundations of Computer Science}, volume = {0}, year = {1964}, isbn = {}, pages = {1229}, doi = {http://doi.ieeecomputersociety.org/10.1109/SWCT.1964.15}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }  
RefWorks Procite/RefMan/Endnote  x  
TY  CONF JO  2013 IEEE 54th Annual Symposium on Foundations of Computer Science TI  New techniques for designing speed independent control logic SN  SP12 EP29 A1  Robert E. Swartwout, PY  1964 VL  0 JA  2013 IEEE 54th Annual Symposium on Foundations of Computer Science ER   
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/SWCT.1964.15
A speed independent circuit has the property that the relative speed of operation of the various logic elements does not affect the overall behavior of the circuit. Such circuits have properties which are of particular importance in the design of reliable asynchronous circuits. An Arithmetic Control for a digital computer is one type of logic which can profitably use these characteristics. The design objective established for the Arithmetic Control for the new Illinois computer was to obtain speedindependent operation. This design effort was not completely successful since a small portion of the logic in this control cannot be considered speedindependent unless an assumption is made which is not justified in practice. Using this fact as motivation, these studies investigate three new methods for designing speedindependent logic. In these studies, two very different approaches to the design of control logic are used. The first method is based on a buildingblock technique where a control logic is formed by properly interconnecting standard subsections of speedindependent logic. When the second technique is used, the sequencing problem is represented by Gray Code movements on an ncube; these sequencing movements are determined by the mapping of flow chart requirements onto the ncube. Since the controls designed using these very differents methods were only slightly different in size, it was concluded that within the context of these studies the choice of design method has only a small effect on control size.
Citation:
Robert E. Swartwout, "New techniques for designing speed independent control logic," focs, pp.1229, 1964 Proceedings of the Fifth Annual Symposium on Switching Circuit Theory and Logical Design, 1964
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