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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 20-bit
 8-bit
 16-bit
 4-bit

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 there is a pin available for serial input
 there is a pin available for serial output
 serial I/O is possible through SIM and RIM instruction
 serial I/O is not possible

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Microprocessor
Number of Hex digits needed to represent the 20-bit address of a memory location are

 4
 20
 16
 5

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Execution Unit (EU)
 None of these
 Bus Interface Unit (BIU)
 Both ‘c’ and ‘d’

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Microprocessor
Which one of the following statement is false?

 A microprocessor has bi-directional address bus
 A microprocessor has bi-directional data bus
 A microprocessor has an ALU
 A microprocessor has unidirectional address bus

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

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

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