Topic: Computer Organization
In a daisy chained connection to the CPU, the peripheral whose interrupt request has the highest priority is the one
- A. with the largest vector address
- B. with highest speed of operation
- C. electrically nearest to the CPU
- D. electrically farthest from the CPU
Answer: C. electrically nearest to the CPU
Explanation: Daisy chaining method: The daisy chaining method of establishing priority consist of a serial connection of all devices that request an interrupt. The device with the highest priority is placed in the first position, followed by lower priority devices microprocessor to the device with the lowest priority, which is placed last in the chain. This method of connection between these devices and the CPU is known as daisy chain priority interrupt.