Computer Architecture Quiz

What does this diagram represent?

• Logic microoperation

• Reading data from memory

• Writing data to memory

• Bus transfer

What is the statement that accurately represents the implementation of this figure?

• yT₂: R2 ← R1

• yT₂: R1 ← R2

• R1 ← R2, R2 ← R1

• yT₂: R2 ← R1, R1 ← R2

In the following figure, if R0 = 0000 0000, R1 = 1111 1111, R2 = 0000 1111, R3 = 1111 0000, S1 = 1, S0 = 0, What is the value of register R5?

• 0000 0000

• 1111 1111

• 1111 0000

• 0000 1111

Which logic microoperation is shown in the diagram?

• NOT R1 and NOT R2

• (R3 ← R1 xor R2)

• (R3 ← R1 and R2)

• (R3 ← R1 or R2)

What is the statement that accurately represents the implementation of the given figure?

• T3: R2 ← R1

• T1 T3': R2 ← R1

• T3 T1: R2 ← R1

• T3' T1': R2 ← R1

For the shown circuit, if S = 0 and Cin = 1, which statement occurs?

• D = A − 1

• D = A − B

• D = A + B

• D = A + 1

Which instruction performs the AND logic operation between the AC and a memory word?

• AND instruction

• ADD instruction

• None of the above

• STA instruction

Which type of instruction format is used for performing input-output operations?

• Memory reference instructions

• Register reference instructions

• Input-output instructions

• None of the above

Which type of instruction format is used for performing operations on registers?

• None of the above

• Input-output instructions

• Register reference instructions

• Memory reference instructions

Once an instruction is fetched, where is it placed?

• Memory Buffer Register (MBR)

• Arithmetic Logic Unit (ALU)

• Program Counter (PC)

• Instruction Register (IR)