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Microprocessor

Microprocessor
The maximum number of seven segment displays that can be connected to 8279 is

 18
 12
 8
 16

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
 DAD RP instruction is executed
None of these
 INTR interrupt is recognized

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Microprocessor
The addressing mode in instruction PUSH B is

 register indirect
 register
 immediate
 direct

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Microprocessor
Which one of the following statement is false?

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

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

-0
-1
+0
1

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Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 16
 6
 8
 2

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