There were two methods of doing modular transformations from Entity Relationship Diagrams to Class Diagrams according to international researchers. In order to establish which method would best suit software engineers, we conducted a survey by giving a group of students in the computer science field, whom we considered potential future software engineers. The results we got were valid, but did not match those of any of the international researchers. We found that this situation could only be explained using Eastern Four-Valued logic, also known by such names as Catuskoti and Tetralemma.
Yours Sincerely,
N D Kodikara, G K A Dias and R S Madanayake
Many Thanks (Dr.? Prof.? ) Peter Breuer for your well thought out reply.
Best Regards,
Ravi Madanayake
I would not necessarily categorize either system as particularly eastern or western. I think we all are raised with an understanding of On, Off, and something in the middle or have walked up a staircase.
The reason that binary "won" in terms of the representation of digital data is that it is the easiest to implement with the fewest number of transistors. Tri-state logic emerged more out of practical necessity because we need to make "real" computers. 4 and 5 state logics emerged also for the same reason - making electrons move around. Even in such systems, rarely are these multiple states used for computing, but rather buffering and interfacing various things withing a computing device.
With that said, there are some curiosities which emerge if a particular fabrication technique make it cheaper, smaller, easier to implement N-state gates. Then you can do things like have a base 3 or base 4 computing element.
In chip design VHDL uses a 9-state logic to allow the representation of arbitrary logic circuits, including tri-state or 4 or 5 state logic. Look at IEEE 1164, then hope you never need to look at it again.
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