| 摘要 |
Disclosed herein is a logic circuit which responds to three signals to detect whether the number of signals taking one of logic-1 and logic-0 is odd or even, and includes five NAND gates. The first NAND gate is supplied with the first signal, the second signal and the third signal; the second NAND gate is supplied with the inverted first signal, the inverted second signal and the third signal; the third NAND gate is supplied with the first signal, the inverted second signal and the inverted third signal; and the fourth NAND gate is supplied with the inverted first signal, the second signal and the inverted third signal. The fifth NAND gate is supplied with outputs of first, second, third and fourth NAND gates and produces the output signal whose logic level is dependent on whether the number of the input signals taking one of logic-1 and logic-0 is odd or even. |
