86 Family Interview Questions

 
1.
What is ALE? Explain the functions of ALE in 8085?
2.
What is a program counter? What is its use?
3.
Which line will be activated when an output device require attention from CPU?
4.
Tell me How do you detect if two 8-bit signals are same?
5.
How to detect a sequence of "1101" arriving serially from a signal line?
6.
Explain an interrupt?
7.
Design any FSM in VHDL or Verilog?
8.
Explain RC circuit?s charging and discharging?
9.
Explain the working of a binary counter?
10.
Explain two ways of converting a two input NAND gate to an inverter?
11.
Write an assembly code which can call function in a loop with al value from 0 to 9?
12.
What do you mean by embedded system?
13.
What are tri-state devices and why they are essential in a bus oriented system?
14.
Where can we find the sample ASSEMBLY LANGUAGE programs?
15.
Explain What is the difference detween ISR & function call?
16.
What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit?
17.
Please give a circuit to divide frequency of clock cycle by two?
18.
Design a divide-by-3 sequential circuit with 50% duty circle now?
19.
Suppose you have a combinational circuit between two registers driven by a clock. What will you do if the delay of the combinational circuit is greater than your clock signal?
20.
What are different Adder circuits you studied?
21.
Give truth table for a Half Adder, Give a gate level implementation of the same?
22.
Explain Transmission Gate-based D-Latch?
23.
Design a Transmission Gate based XOR. Now, how do you convert it to XNOR?
24.
What is ALE? Explain the functions of ALE in 8085?
25.
What is a program counter? What is its use?
26.
Which line will be activated when an output device require attention from CPU?
27.
Tell me How do you detect if two 8-bit signals are same?
28.
How to detect a sequence of "1101" arriving serially from a signal line?
29.
Explain an interrupt?
30.
Design any FSM in VHDL or Verilog?
31.
Explain RC circuit?s charging and discharging?
32.
Explain the working of a binary counter?
33.
Explain two ways of converting a two input NAND gate to an inverter?
34.
Write an assembly code which can call function in a loop with al value from 0 to 9?
35.
What do you mean by embedded system?
36.
What are tri-state devices and why they are essential in a bus oriented system?
37.
Where can we find the sample ASSEMBLY LANGUAGE programs?
38.
Explain What is the difference detween ISR & function call?
39.
What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit?
40.
Please give a circuit to divide frequency of clock cycle by two?
41.
Design a divide-by-3 sequential circuit with 50% duty circle now?
42.
Suppose you have a combinational circuit between two registers driven by a clock. What will you do if the delay of the combinational circuit is greater than your clock signal?
43.
What are different Adder circuits you studied?
44.
Give truth table for a Half Adder, Give a gate level implementation of the same?
45.
Explain Transmission Gate-based D-Latch?
46.
Design a Transmission Gate based XOR. Now, how do you convert it to XNOR?