BCA C2 Quiz-1 Fall sem 25-26

If the inputs of an OR gate are A = 0 and B = 1, what will be the output?

• A) 0
  

• B) 1
  

• C) Depends on previous input
  

• D) Cannot be determined

Which logic gate is called a "Universal Gate" because any digital circuit can be implemented using only this gate?

• A) OR
  

• B) AND
  

• C) XOR
  

• D) NAND

The unit that performs arithmetic and logical operations in a computer is called:

• A) Control Unit (CU)
  

• B) Arithmetic Logic Unit (ALU)
  

• C) Memory Unit
  

• D) Input Unit

The instruction ADD R1, R2 means:

• A) Add contents of R1 and R2 and store result in memory

• B) Add contents of R1 and R2 and store result in R1

• C) Add contents of R1 and R2 and store result in R2

• D) Add R1 with immediate value in R2

The full forms of RISC and CISC are:

• A) Reduced Instruction Set Computer, Complex Instruction Set Computer

• B) Rapid Instruction Set Computer, Controlled Instruction Set Computer

• C) Random Instruction Set Computer, Central Instruction Set Computer
  

• D) None of the above

Integrated Circuits (ICs) were introduced in which generation of computers?

• A) First generation
  

• B) Second generation
  

• C) Third generation
  

• 
  D) Fourth generation

What is the decimal equivalent of (1011)₂?

• 9

• 10

• 11

• 12

The hexadecimal equivalent of (1001)₂ is:

• A

• 7

• 8

• 9

If an instruction directly specifies the memory address of the operand, it is:

• A) Direct addressing mode
  

• B) Indirect addressing mode
  

• C) Register indirect addressing
  

• D) Indexed addressing

Which of the following is the correct order of phases in an instruction cycle?

• A) Fetch → Decode → Execute
  

• 
  B) Decode → Fetch → Execute
  

• 
  C) Execute → Fetch → Decode
  

• 
  D) Fetch → Execute → Decode