NAND Gate

boolean_algebra/nandgate.py

@@ -0,0 +1,48 @@
+"""
+A NAND Gate is a logic gate in boolean algebra which results to false(1)
+if any of the input is 0, and True(1) if  both the inputs are 1.
+Following is the truth table of an NAND Gate:
+   | Input 1 | Input 2 |  Output |
+   |      0      |     0      |      1      |
+   |      0      |     1      |      1      |
+   |      1      |     0      |      1      |
+   |      1      |     1      |      0      |
+
+
+Following is the code implementation of the NAND Gate
+"""
+
+
+def nand_gate(input_1: int, input_2: int) -> int:
+    """
+    >>> nand_gate(0, 0)
+    1
+    >>> nand_gate(0, 1)
+    1
+    >>> nand_gate(1, 0)
+    1
+    >>> nand_gate(1, 1)
+    0
+    """
+    if input_1 == input_2 == 1:
+        return 0
+    else:
+        return 1
+
+
+def main() -> None:
+    print("Truth Table of NAND Gate:")
+    print("| Input 1 |", " Input 2 |", " Output |")
+    print("|      0      |", "     0      |     ", nand_gate(0, 0), "     |")
+    print("|      0      |", "     1      |     ", nand_gate(0, 1), "     |")
+    print("|      1      |", "     0      |     ", nand_gate(1, 0), "     |")
+    print("|      1      |", "     1      |     ", nand_gate(1, 1), "     |")
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()
+    main()
+"""Code provided by Janith Herath"""
+"""Reference: https://www.geeksforgeeks.org/logic-gates-in-python/"""