Microprocessor
A microprocessor without the interrupt facility

 cannot be used for DMA operation
 is best suited for process control system
 cannot be interfaced with any I/O devices
 is not useful for process control system

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Microprocessor
Which of the following is not true during the execution of an interrupt service routine, which does not contain any EI instructions

 the microprocessor cannot be interrupted by any mask able interrupt
 the microprocessor cannot be interrupted by any interrupt
 all interrupts except non-maskable interrupt are disabled
 the microprocessor can be interrupted by a non-mask able interrupt

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