A Note on the Number of Internal Variable Assignments for Sequential Switching Circuits
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An important step in the synthesis of sequential switching circuits is the assignment of binary variable states to represent internal states of the circuit. A formula is derived here which indicates the number of different assignments which can be made for flow tables having a given number of rows. There are only three essentially different assignments possible for a four-row table, and there are 140 for a five-row table.
[1] David A. Huffman,et al. The synthesis of sequential switching circuits , 1954 .
[2] Edward J. McCluskey. Iterative Combinational Switching Networksߞ General Design Considerations , 1958, IRE Trans. Electron. Comput..
[3] Edward J. McCluskey,et al. Detection of group invariance or total symmetry of a Boolean function , 1956 .
[4] Claude E. Shannon,et al. The synthesis of two-terminal switching circuits , 1949, Bell Syst. Tech. J..