Discussion
Identify the gate shown in the following figure:
Answer: B
The symbol has a curved back edge and a pointed front, and the output has no small circle (bubble) on it. That is the OR gate symbol: the output is high when either input is high. An AND gate has a flat back, a NAND gate is an AND with a bubble, and a NOT gate is a triangle with a bubble, drawn with one input. The answer is OR, option B.
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