Эффективные модели и схемы цифровых устройств циклического действия

Abstract

The work considersmodels and schemes of widespread digital devices of cyclic action. They includecoders and decoders of information transfer system, control units of processors, generators of codes, counters, distributors of impulses etc. Three models of devices for consecutive, parallel and ripple through information transfer are suggested and proved. The structure of the models is presented by a set of blocks with original operation algorithms and connections between their blocks. The blocks are implemented in the form of Moore machines (in case of consecutive transfer) and Mealy machines (in case of parallel and ripple through transfer). A technique for synthesizing devices based on these models with the use of canonic synthesis methods and ofHuffman transition tablesmodified by the authoris suggested. This allows implementing compactly devices of practically any complexity. Algorithms for transition from models with ripple through transfer to models with parallel and consecutive transfer are described. Examples of implementing models in the form of concrete schemes confirming their efficiency are considered.