Question

The act of assigning a value to a variable is a:

• A. Control instruction
• B. Store instruction
• C. Transfer instruction
• D. Output instruction

Answer 1

Answer:

B. Store instruction

• Store Instruction (Assignment): In the context of computer architecture and programming, assigning a value to a variable (e.g., x = 10) is carried out by a STORE operation. This operation takes the calculated or specified value (the constant 10) and places (stores) it into the dedicated memory location or register associated with the variable (x).

• (A) Control instruction: These instructions manage the flow of the program (e.g., if, for, goto, jump, or call).

• (C) Transfer instruction: This usually refers to an instruction that moves data between different components, often between registers or between memory and a register (like a LOAD instruction, which retrieves a value from memory). While assignment involves a transfer, the final step of placing the value into the variable's memory location is the STORE operation.

• (D) Output instruction: These instructions send data from the computer's memory or CPU to an external device (like a printer or screen).