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Register Transfer and Microoperations | Computer Science MCQs and Answers

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Covers Computer Architecture and Organization objective Questions with Answers on Register Transfer and Micro-operations. Here five MCQ Questions with Answers are added on registers, addressing modes etc. and each question contain four options as possible answer but only one option is the correct answer. Select one and check your answer with the given correct answer.
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(1) In register addressing mode operands are looked at
[A] In cache
[B] In secondary storage
[C] In CPU
[D] In primary memory

Comment

Answer: Option [C]

In register addressing mode operands are stored in CPU. Data is moved from register to register.

(2) What can be used to store one or more bits of data, which can accept and/or transfer information serially ?
[A] Parallel registers
[B] Shift registers
[C] Counters
[D] None of these

Comment

Answer: Option [B]

Shift registers are group of flip-flops. each flip-flop in the register store one bit only i.e 1 or 0.

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(3) The example of implied addressing is
[A] Stack addressing
[B] Immediate addressing
[C] Indirect addressing
[D] None of the above

Comment

Answer: Option [A]

The Stack mode of addressing is an example of implied addressing. Here machine instructions are proceeded on top of the stack implicitly without memory reference.

(4) In the indirect address mode
[A] the effective address is equal to the address part of the instruction
[B] the content of the program counter is added to address part of the instruction
[C] a memory is addressed by a register
[D] address in the instruction points to location of the effective address.

Comment

Answer: Option [C]

In indirect address mode address in the instruction points to location of the effective address.

(5) In an instruction the address part points to the address of actual data. The addressing mode is
[A] immediate addressing
[B] direct addressing
[C] indirect addressing
[D] none of these

Comment

Answer: Option [B]

In direct addressing operand is stored in memory and the memory address of the operand is specified in the instruction

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