Solution

The correct answer is Transfer data from memory to I/O device Key Points

• Write Operation: ✅ In I/O operations, the write operation refers to transferring data from the computer's memory to an I/O device (e.g., writing data to a file on a disk, sending data to a printer, or outputting data to a display).
• Transfer from I/O device to memory: ❌ This is the definition of a read operation, not a write operation.
• Transfer from CPU register to memory: ❌ This involves internal data movement within the computer and is unrelated to I/O operations.
• Transfer from CPU register to I/O device: ❌ This is a lower-level operation and might involve intermediate buffering in memory, but it is not the direct definition of the I/O write operation.

Additional Information

• Input/Output (I/O): Refers to the communication between a computer and external devices. Examples include keyboards, displays, storage devices, and networks.
• Write Operation: A process where data is sent from the computer's memory to an external device (e.g., saving a file, sending data to a printer).
• Read Operation: A process where data is received from an external device to the computer's memory (e.g., loading a file from disk).

Hence, the correct answer is: option 2) Transfer data from memory to I/O device