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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Microprocessor
IN an intel 8085A microprocessor, why is READY signal used?

 To provide proper WAIT states when the microprocessor is communicating with a slow peripheral device.
 To slow down a fast peripheral device so as to communicate at the microprocessor’s device.
 To indicate to user that the microprocessor is working and is ready for use.
None of these

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