Abstract
Nine basic fuzzy logic circuits employing p-ch and n-ch current mirrors are presented, and the fuzzy information processing hardware system design at a low cost with only one kind of master slice (semicustom fuzzy logic IC) is described. These intrinsic fuzzy logic circuits have the following distinctive features; (1) Electrical characteristics are insensitive to wafer process parameters. (2) The circuits exhibit good linearity, robustness against the thermal and supply voltage fluctuations, and very high operation speed. (MIN and MAX circuits can normally operate with supply voltage of 4V ∼ 8V under the temperature range of −55°C ∼ +125°C and respond enough within 20 nsec.) (3) They don't need resistors nor isolation, etc. These circuits will be building blocks of “fuzzy computer”. Finally, the prospect and situation of fuzzy hardware systems are discussed.
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