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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 16-bit
 4-bit
 8-bit
 20-bit

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Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH PSW
 PUSH SP
 PUSH A
 POP PSW

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 EI
 RIM
 DI
 SIM

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Microprocessor
The characteristics of RESET OUT signal is/are

 this signal can be used to reset other devices.
 all.
 the signal is synchronized to the processor clock.
 indicates that µp is being reset.

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Microprocessor
In 8085 microprocessor based system maximum possible number of input/output devices can be connected using I/O mapped I/O technique is

 256
 64
 65536
 512

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Microprocessor
During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

 T4 OP code fetch
 T2 OP code fetch
 T1 OP code fetch
 T3 OP code fetch

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