When we say an interrupt is "pending." it means that ... the processor is currently in debug mode. the hardware device (peripheral) is not ready to generate an interrupt. o the interrupt handler has not yet completed the processing of the interrupt. the hardware has been informed that interrupt has been recognized the processor is blocked until the next rising clock edge. D Question 21 1 pts An array of function pointers, each of which refers to a handler, is a simple, hardware-supported data structure called a. stack IVT linked list interrupt service table call graph Which of the following components of an event-based interrupt scheme is a signal? ISR handler IRO All of the above. o None of the above. Question 23 1 pts When an interrupt occurs, its service routine is called. Which of the following best describes a proper interrupt service routine? A proper service routine will clear the stack and heap on call to prevent memory errors. When enabled, it will automatically set various bits in certain registers, which can be analyzed later in the main loop. A special hardware feature that resets the PC when enabled A brief function that gets called when an event occurs