Hardware / Microprocessor Interview Questions
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8086 interview questions II
- Which is the tool used to connect the user and the computer? - Interpreter is the tool used to connect the user and the tool.
- What is the position of the Stack Pointer after the PUSH instruction? - The address line is 02 less than the earlier value.
- What is the position of the Stack Pointer after the POP instruction? - The address line is 02 greater than the earlier value.
- Logic calculations are done in which type of registers? - Accumulator is the register in which Arithmetic and Logic calculations are done.
8085 microprocessor questions
- What are the various registers in 8085? -
Accumulator register, Temporary register, Instruction register, Stack Pointer, Program Counter are the various registers in 8085 . - In 8085 name the 16 bit registers? -
Stack pointer and Program counter all have 16 bits. - What are the various flags used in 8085? -
Sign flag, Zero flag, Auxillary flag, Parity flag, Carry flag. - What is Stack Pointer? -
Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address of the top of the stack.
8085 microprocessor questions II
- What are Software interrupts? -
RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7. - Which interrupt has the highest priority? -
TRAP has the highest priority. - Name 5 different addressing modes? -
Immediate, Direct, Register, Register indirect, Implied addressing modes. - How many interrupts are there in 8085? -
There are 12 interrupts in 8085. - What is clock frequency for 8085? -
3 MHz is the maximum clock frequency for 8085. - What is the RST for the TRAP? -
RST 4.5 is called as TRAP.
Pentium interview questions
- Have you studied buses? What types?
- Have you studied pipelining? List the 5 stages of a 5 stage pipeline. Assuming 1 clock per stage, what is the latency of an instruction in a 5 stage machine? What is the throughput of this machine ?
- How many bit combinations are there in a byte?
- For a single computer processor computer system, what is the purpose of a processor cache and describe its operation?
- Explain the operation considering a two processor computer system with a cache for each processor.
- What are the main issues associated with multiprocessor caches and how might you solve them?
Telecommunications interview questions II
1. A 2MB PCM(pulse code modulation) has…
a) 32 channels
b) 30 voice channels & 1 signaling channel.
c) 31 voice channels & 1 signaling channel.
d) 32 channels out of which 30 voice channels, 1 signaling channel, & 1 synchronization channel.
Ans: c
2. Time taken for 1 satellite hop in voice communication is…
a) 1/2 second
b) 1 seconds
c) 4 seconds
d) 2 seconds
Ans: (a)
3. Max number of satellite hops allowed in voice communication is:
a) only one
b) more han one
c) two hops
d) four hops
