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Register Transfer and Microoperations | Computer Science MCQs and Answers

1 In register addressing mode operands are looked at
A In cache
B In secondary storage
D In primary memory

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

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.



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

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.

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

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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