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Online Tests
PPSC Computer Science Chapter 17 Microprocessor And Assembly Language Online Test MCQs With Answers
Question # 1
The structure of the stack is _______ type structure.
Choose an answer
First in last out
Last in last out
Both a and b
None
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Question # 2
the growth of LSI technology on
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1994-1995
1971-1977
1972-1978
None
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Question # 3
The processer of knowing the status of device and transferring the data with matching speeds is called.
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Handshaking
Peripheral
Ports
None
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Question # 4
in linear decoding address bus of 16 -bit wide can connect only of RAM
Choose an answer
Address map is not contiguous
Confects occur if two of the select lines become active at the same time
If all unused address lines are not used as chip selectors then these unused lines become don't cares.
None
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Question # 5
NMI stand for
Choose an answer
Non mask able interrupt
Non mistake interrupt
Both a and b
None
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Question # 6
Which are the flags of status register.
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Over flow flag
carry flag
Half carry flag
All of these
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Question # 7
WE stand for
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Write enable
Wrote enable
Write envy
None
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Question # 8
DI stand for
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Destination index
Defect index
Definition index
Delete index
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Question # 9
INT stand for
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Input
Interrupt
Both a and b
None
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Question # 10
How many bit stored by status register
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1 bit
4 bit
6 bit
8 bit
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Question # 11
In microprocessor one of the operands holds a special register called.
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Calculator
Dedicated
Accumulator
None
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Question # 12
ED stand for
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Enable MRD
Enable MDR
Both a and b
None
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Question # 13
The left side of any binary number is called.
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Least significant digit
Most significant digit
Medium significant digit
Low significant digit
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Question # 14
Which is the small amount of highs speed memory used to work directly with the microprocessor
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Cache
Case
Cost
Coos
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Question # 15
LRB stand for
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Line ready buffers
Line root buffers
Line read buffers
Line right buffers
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Question # 16
Which are used for port B in 8255
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CPO-PC2
PC3-PC7
PC6-PC7
PC3-CP5
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Question # 17
Eight of the register are known as.
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General purpose register
Pointer or index registers
Segment registers
All of theses
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Question # 18
DEC stand for
Choose an answer
Digital electronic computer
Digital electronic corporation
Digital equipment corporation
None
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Question # 19
There are primarily two types of register
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General purpose register
Dedicated register
a and b
None
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