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What r the functions of interrupt initiated Input Output?
software
What do you mean by interrupt driven input output and programmed input and output?
PIO uses the port access instructions of the CPU to receive or send data. That is also known as polling, since you have to constantly use the CPU to monitor a particular port address. Interrupt driven would use the IRQ controller to access things. The CPU still does the work, but the interrupt calls on the CPU rather than a currently running program doing so.
Explain how int 21h can be used for input output in 8086 microprocessor?
The INT 21H instruction in the 8086 is a software interrupt to vector 21H. In order for it to be used for input/output, the programming that responds to INT 21H must be present. This is part of the Operating System.
Is an OMR an input or output?
is an omr and input or output device?
Is interactive whiteboard an input or output device?
both input r output
Is a graphic tablet output or input?
Input device.
Is a projector input or output?
it is an output device
What is the input to output ratio formula?
output/input
Is Digitizing Pad is an input or an output?
output and input
Is a CPU input or output?
Neither, it is not classified under input or output. It has its own identity
What is interrupts and list classes of interrupts in operating system?
An interrupt is an event that alters the sequence in which the processor execute instructions. It is generated by hardware of computer system. Classes of interrupt:- IBM processor has six types of interrupts. * svc interrupt(supervisor call) *input/output interrupts *external interrupts *Restart interrupts *Program check interrupt *Machine check interrupts
What is difference between interupt and subroutine?
Interrupt is the signal generated by the input/output devices in order to take the attention of the processor. When the processor receives the interrupt signals it checks the priority status and finish the current fetch and execute cycle and (if the priority status is high) allow the input/output device to process their tasks. Then previous fetch and execute cycle is continued. This is called interrupt service routine. The programs are broken down in to small sub programs which are called subroutines. Then the program reusability, readability, maintainability ...etc will be increased.
