[Q.1] In computer organization, what does the memory address register (MAR) hold?
MAR holds the memory address from which data will be fetched or to which data will be written.
[Q.2] Which addressing mode in 8085 microprocessor specifies the operand inside the instruction itself?
In immediate addressing mode (e.g., MVI A, 05H), the 8-bit or 16-bit data/operand is directly specified in the instruction.
[Q.3] What is the primary advantage of pipelining in CPU architecture?
Pipelining overlaps the execution phases of multiple instructions, increasing the total throughput (number of instructions completed per unit time).
[Q.4] Which Boolean algebra property is represented by A + (B · C) = (A + B) · (A + C)?
The distributive law states that OR distributes over AND in Boolean logic: A + (B · C) = (A + B) · (A + C).
[Q.5] How many select lines are required for a 16-to-1 Multiplexer (MUX)?
For an N-to-1 multiplexer with N inputs, the number of select lines S satisfies $2^S$ = N. Since $2^4$ = 16, 4 select lines are required.