BSc IT Sem VI 2015 2016 2016 DigiElectro.2015 Question Paper - Mumbai University | munotes

Questions asked in this paper

• Figures to the right indicate full marks

1. Q2 What are buffers? Why do we need bidirectional buffer? Explain werking of IC - bidirectional buffer giving its logic diagram truth
   • (b) Attempt any ONE : 4 7 What is Multiplexer? State its uses. Implement the gic equation,
2. Q2 is ROM? State uses of ROM. Explain in fthe EPROM
3. Q9 (a) Attempt any ONE: 3 marks
4. Q1 What is flag? Describe in brief the flag format of 8085 microprocessor
5. Q2 What is an interrupt? State different of interrupt in reference with Describe in brief the TRAP iniérrupt
   • (b) Attempt any ONE:
6. Q1 Write the instructions to: &
   • a. Load 00H in the
   • b. Decrement the of HL pair
   • c. Make Program Counter to jump to C200H if zero flag is set
   • e. Initialize to FFOOH Add the of DE register to HL register pair Do any operation 2, State groups of 8085 instructions. Describe any two from data transfer 3.( t any ONE: sembly language program to multiply two
7. Q1 Write an bers and ‘store the result at a suitable memory emory starting from C100H. Write din the ‘oc in ascending
8. Q2 Aseries of ten bytes 1S. to arrange the series a an assembly language prog Sixteen data bytes are sto bly program to count how from e the result at memory of them are odd numbers C1100H. What is a control
9. Q2 the operation modes of ten to control register is 8255? is the purpose of control word What is the size of ports the general format of switch- case Explain with 13 example how it works 2 program in that accepts digit numer x and finds the sum of the digits in it. If the input is other than digit integer, the program the message “Input only a three digit number." Use if else structure
   • (b) Attempt any ONE : 7 Compare the for-loop while-loop in C++ programming Write programs to the odd integers between | and 50 Describe with suitatile example the function the
10. Q5 Attempt any 7 marks
    • i) Distinguish’ between low level language and high level language between RAR and RRC instructions of 8085 the terms: instruction, opcode and note on general purpose registers in reference to 8085
    • v) the errors in the f i ollowing C++ statements and write them Not a Three digit number "else
    • vi) ‘ Write a short n > ) ote on break Statement

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