Question 101
[Q.1] Which logic gate produces a HIGH (1) output ONLY when all its inputs are LOW (0)?
Detailed Solution
NOR gate output is 1 only when all inputs are 0.
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SSC IMD Scientific Assistant 2026 Full-Length Master Mock Test-2
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Question 102
[Q.2] How many select lines are required for an 8-to-1 Multiplexer (MUX)?
Detailed Solution
$2^n$ = 8 => n = 3 select lines are required for an 8-input MUX.
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Question 103
[Q.3] What is the 2's complement of the binary number 1010100?
Detailed Solution
1's complement of 1010100 is 0101011. Adding 1 gives 2's complement = 0101100.
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Question 104
[Q.4] Which register holds the address of the next instruction to be fetched and executed in CPU?
Detailed Solution
The Program Counter (PC) stores the memory address of the next instruction.
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Question 105
[Q.5] In 8085 Microprocessor, what is the size of the Stack Pointer (SP) register?
Detailed Solution
The Stack Pointer (SP) in the 8085 is a 16-bit memory address register.
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