Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

Which of the following logic gates will provide an active high out when both inputs are active high?

Understanding active-high output means the signal goes high only when the inputs meet the true condition. An AND gate does exactly that: when both inputs are high, the output is high; if either input is low, the output stays low. The other gates don’t fit this scenario. A NAND gate is the inverse of AND, so it outputs low when both inputs are high. A NOR gate also outputs low when both inputs are high (it’s high only when both inputs are low). An XOR gate outputs high when the inputs differ, not when both are high.

Understanding active-high output means the signal goes high only when the inputs meet the true condition. An AND gate does exactly that: when both inputs are high, the output is high; if either input is low, the output stays low. The other gates don’t fit this scenario. A NAND gate is the inverse of AND, so it outputs low when both inputs are high. A NOR gate also outputs low when both inputs are high (it’s high only when both inputs are low). An XOR gate outputs high when the inputs differ, not when both are high.