Suppose a processor does not have any stack pointer register. Which of the following statements is true?
Find the content of the accumulator after the execution of the following program.
MVI A, F0 H
ORI FF H
XRI F0 H
Consider the following 8085 assembly language program
MVI A, 09H
RLC
MOV B, A
RLC
RLC
ADD B
HLT
The content in accumulator after execution will be
Consider the following statements regarding interrupts
(i) RIM is used to receive the data through SID pin.
(ii) DI is used to disable all interrupts.
Which of the following are correct?
Eight memory chips of 32 × 4 bit size have their address buses connected together. What is the size of this memory system?
Memory chips of four different sizes as below are available:
1.32 K × 4
2. 32 K × 16
3. 8 K × 8
4. 16 K × 4
All the memory chips as mentioned in the above list are Read/Write memory. What minimal combination of chips or chip alone can map full address space of 8085 microprocessor?
In the 8085 microprocessor, the RST 6.5 instruction transfers the program execution to the following location
The Instruction RET executes with the following series of machine cycle
Match List-I (Instruction code) with List-II (Addressing mode) and select the correct answer using the code given below the lists:
|
List-I |
List-II |
|
A. JUMP 2021 H |
1. Direct addressing |
|
B. LDAX B |
2. Immediate addressing |
|
C. IN 10H |
3. Indirect Register addressing |
|
D. RLC |
4. Implicit addressing |
Match List-I (Instruction) with List-II (Operation) for Intel 8085 and select the correct answer using the codes given below:
|
List-I |
List-II |
|
A. PCHL |
1. Exchange the top of the stack with the contents of HL pair |
|
B. SPHL |
2. Exchange the contents of HL with those of DE pair |
|
C. XTHL |
3. Transfer the contents of HL to the stack pointer |
|
D. XCHG |
4. Transfer the contents of HL to the programme counter |
Consider the execution of the following instructions by a 8085 microprocessor:
LXIH, 01FFH
SHLD 2050H
After execution the contents of memory locations 2050H and 2051H and the registers H and L, will be
Which of the following statement is correct?
Match the following ADC is with their maximum conversion time for 8 bit digital ouput.
|
Type of ADC |
Maximum conversion for 8 bit ADC in clock |
|
A. Successive approximation. |
1. 1 |
|
B. Dual slope |
2. 8 |
|
C. Parallel comparator. |
3. 16 |
|
|
4. 256 |
|
|
5. 512. |
Digital measuring instruments use the following three types of A to D converters:
1. Dual slope type
2. Counter type.
3. Flash type.
The correct sequence for these converters in decreasing order of their speed (fastest to slowest) is
Given below are three types of converter
1. Successive approximation type.
2. Weighted resistor type.
3. R-2 R ladder type.
Which of these types are D to A converter ?
