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Microprocessor

Microprocessor
Of the following circuits, the one which involves storage is

Mux
RS Latch
Nand
Decoder

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Microprocessor
Total number of modes the 8253 can work

 8
 6
 12
 4

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 2, 3, 5
 1, 3, 5
 1, 3, 4
 1, 2, 5

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Microprocessor
A 37 bit mantissa has an accuracy of

11 decimal places
8 decimal places
10 decimal places
6 decimal places

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Microprocessor
After RESET 8255 will be in

 mode 0; all ports are input
 mode 0; all ports are output
 mode 2
 unchanged condition

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 Enable the data bus to be used as low order address bus
 To disable data bus
 To latch data D0-D7 from data bus
 To achieve all the functions listed above

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