Microprocessors(ECE303)-Lab-Viva
Viva is 5 Marks . 1/2 mark for each question.
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Enter your Name *
Asmita
Consider the following registers: 1. Accumulator and flag register 2. B and C
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register 3. D and E register 4. H and L register . Which of these 8-bit registers of
8085 microprocessor can be paired together to make a 16-bit register?
1 ,3 and 4
2 ,3 and 4
1, 2 and 3
1, 2 and 4
Consider the following I) Sign flag II) Trap flag III) Parity flag IV) Auxiliary carry
flag . Which one of the above flags is/are present in 8085 microprocessor?
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(I) only
(I) & (II)
(II) & (III)
(I) ,(III) & (IV)
In 8085 name of the 16 bit registers is *
Stack pointer
Program counter
both A and B
none of these
Which instruction is required to rotate the content of accumulator one bit right *
along with carry?
RLC
RAL
RRC
RAR
Temporary registers in 8085 are *
B and C
D and E
H and L
W and Z
Register pair used to indicate memory *
B and C
D and E
H and L
W and Z
In 8085, the 16-bit address bus, can address upto? *
16KB
32KB
64KB
128KB
It is also a 16-bit register works like stack, which is always
incremented/decremented by 2 during push & pop operations.
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Stack pointer
Temporary register
Flag register
Program counter
For a microprocessor to execute a program, the CPU has to do the following
operations:
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Fetch the opcode
Read a memory location for the data.
Perform the required operation
All of the above.
The speed of a microprocessor is usually measured by the *
Microprocessor’s throughput.
Speed with which it performs I/P and O/P operations.
Time required to execute basic instruction.
Time required to process a small operation.
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