Digital Electronics - Study Mode
[#186] Which logic gate is a basic comparator?
Correct Answer
(C) EX-NOR
[#187] Reduce the Boolean equation $${ ext{AB}} + { ext{ABC}} + overline { ext{A}} { ext{B}} + { ext{A}}overline { ext{B}} { ext{C}}$$
Correct Answer
(C) B + AC
[#188] Match List-I with List-II and select, the correct answer using the options given below the lists: List-I (Digital Circuit) List-II (Circuit Type) a. BCD to 7-segment 1. Sequential circuit Decoder b. 4-to-1 Multiplexer 2. Combinational circuit c. 4 bit Shift Register 3. Neither sequential nor combinational d. BCD Counter
Correct Answer
(C) a-2, b-2, c-1, d-1
[#189] The initial state of MOD-12 down counter is 0110. After 28 clock pulses, the state of the counter will be-
Correct Answer
(C) 0010
[#190] The fan put of a 7400 NAND gate is
Correct Answer
(D) 10TTL