Verification of the truth tables of TTL gates.
Digital lab kit, single strand wires, breadboard, TTL IC’s AND (IC-7408), OR (IC-7432), NAND (IC-7400), NOR (IC-7402), NOT (IC-7404) and NOR (IC-7486).
Logic gates are idealized or physical devices implementing a Boolean function, which it performs a logical operation on one or more logical inputs and produce a single output. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fan out or it may refer to anon-ideal physical device.
The main hierarchy is as follows: -
AND Gate: The AND gate performs a logical multiplication commonly known as AND function. The output is high when both the inputs are high. The output is low level when any one of the inputs is low.
OR Gate: The OR gate performs a logical addition commonly known as OR function. The output is high when any one of the inputs is high. The output is low level when both the inputs are low.
NOT Gate: The NOT gate is called an inverter. The output is high when the input is low. The output is low when the input is high.
NAND Gate: The NAND gate is a contraction of AND-NOT. The output is high when both inputs are low and any one of the input is low. The output is low level when both inputs are high.
NOR Gate: The NOR gate is a contraction of OR-NOT. The output is high when both inputs are low. The output is low when one or both inputs are high.
X-OR Gate: The output is high when any one of the inputs is high. The output is low when both the inputs are low and both the inputs are high.
AND Gate: The output is high when any one of the inputs is high. The output is low when both the inputs are low and both the inputs are high.
Thus the logic gates are studied and their truth tables were verified.
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