Wednesday, 3 April 2013

FOC


APRIL-2009                           SAU1A


PART-A

  1. What is COMPUTER?
  2. Write any four computer languages.
  3. What kinds of technique is used in fourth and fifth generation of computers?
  4. What is a radix?
  5. Convert the following decimal to binary number (43)10.
  6. What is the use of complement ?
  7. What are binary digits?
  8. State any two laws of Boolean algebra.
  9. Define flip-flop.
  10. Define counter.
  11. Write the differences between ROM and RAM.
  12. What is multiplexer?

PART-B

  1. Write down the characteristics of computers.
  2. Explain the working of CPU with diagram.
  3. Covert the following octal to Decimal.
a)      (246431)8 = (?)10
b)      (115.077)8=(?)10
  1. Using 9’s and 10’s complement subtract the following:
a)      56 and – 21
b)      48 and -34.
  1. What are binary codes? Explain any one with example.
  2. What is k-map ? Using K-map find the solution of 
    ∑(0,1,2,3,5,6,7,9,10,11,12,13,15).
  3. Write short notes on Demultiplexer with a neat diagram.

PART-C

  1. Explain the evolution of computers.
  2. What are universal gates? Explain
  3. State and prove De Morgan’s theorem.
  4. With neat diagram explain J.K. Master slave flip flop.
  5. What are Decoders and Encoders? Explain.


NOVE-2009                                                               SAU1A

PART-A

  1. What are the major sections of a digital computer?
  2. Name any four input/output devices.
  3. How is 1’s complement equivalent of a binary number computed?
  4. What are universal gates?
  5. Mention the truth table of J-K Flip-Flop.
  6. Draw the structure of a four variable K-map.
  7. What is a register?
  8. Name any two combinational circuits and mention their role.
  9. Mention any two uses of decoders.
  10. What are ripple counters?
  11. Mention the role of a full adder.
  12. What are PLAs? Mention their use.

PART-B

  1. What are the components of CPU? Mention the role of each component.
  2.  Explain any five logic gates with truth table.
  3. Explain the steps used to convert a decimal number into binary and hexadecimal numbers.
  4. Explain the steps involved in the simplification of expressions using tabulation method.
  5. Explain the truth tables of T and D Flip-flops.
  6. Explain the truth tables of half adder.
  7. Briefly explain different ROM families.

PART-C

  1. Discuss the features of operating systems.
  2. Explain the characteristics of language used for computer programming.
  3. Simplify the following expression using K-map method
F(w,x,y,z)=∑(1,4,6,9,10,11,12,15)+ ∑ d (8,13,14)
  1. What are synchronous counters? Explain the operation of a synchronous counter with a neat diagram.
  2. Write short notes on:
a)      Full adder
b)      Encoders

APRIL-2010                                                                                       SAU1A

PART-A

  1. Perform the following (1101)2+(101)2+(1010)2
  2. What do you mean by weighted code?
  3. Write truth tables for XOR gate.
  4. State Demorgan’s theorem.
  5. Define flip-flop.
  6. Draw the circuit for JK flip-flop with its state table.
  7. What is buffer?
  8. What is ROM?
  9. What is De-multiplexer?
  10. What is the use of primary memory?
  11. What is RAM?
  12. Draw a circuit for (X.Y)+Z.

PART-B

  1. Solve the following binary into its equivalent octal and Hexadecimal.
a) (101011111)2   and  b)(110111100111)2.
14. Multiply   (11001)2 by (100)2
15. Write short notes on: a) sum of products terms  b) product of sum terms
16. Explain the function of JK flip-flop in detail.
17. Describe Full subtractor circuit.
18. Explain shift registers using suitable logic diagram.
19. Discuss in details about the multiplexer with neat block diagram.

PART-C

20. Explain the binary addition using complements with example.
21. Discuss in detail about Gray codes and BCD codes.
22. Explain the basic laws of Boolean algebra with example.
23. Construct OR,AND, NOT gates using NOR gates.
24. What is counter? Classify and explain its various types.

NOVE-2010                                                                                       SAU1A

Part-A

  1. What is computer?
  2. What is an operating system?
  3. Write any two application area of computers.
  4. What are the ranges of Hexadecimal number system?
  5. Convert the following binary number to decimal format (11100)2à(?)10
  6. Write down the steps of 1’s complement and also find 2’s complement of 1010
  7. What are logic gates?
  8. What is the purpose of truth table?
  9. Which gates are called as universal gates?
  10. What are registers?
  11. Define encoders.
  12. Write a note on half adder in a two lines.

Part-B

  1. Write down the characteristics of computers.
  2. Explain any two types of computer systems.
  3. Convert the following hexadecimal to decimal format
a)      (53CD)16à (?)10
b)      (0.3D79)16à(?)10
  1. Using 1’s and 2’s compliment subtract the following
a)      0.1110-0.1001
b)      110-0.111
  1. Draw the logic circuits for the following equations using logic gates
a)      x  y  z +  x  y  z
b)      x  y  z +  x  y  z
  1. Write short notes on R-S flip flop
  2. Explain about ROM with a neat diagram.

Part-C

  1. Write in detail about the basic components of digital computer.
  2. Convert the following decimal number to binary, octal and hexadecimal format.
a)      (270)10
b)      (13.75)10
  1. Explain overlapping in K-map and also find the solution using K-map of 4 variables f(A,B,C,D)=∑m (0,2,3,6,7,8,10,11,12,13).
  2. Explain about the ripple counter.
  3. Discuss multiplexer in detail.

NOVE-2011                                                                                                   SAU1A

PART-A

     1.      Convert the following hexadecimal numbers into binary numbers:
a)      FFFF
b)      AAAA
     2.      State Commutative law
     3.      Write the truth table for NAND gate.
     4.      Define: Flip-flop.
     5.      What is Memory?
     6.      What is Bit?
     7.      What is the 2’s complement of (111111)2?
     8.      What is called as LSB?
     9.      Mention the types of level triggering in flip-flop.
    10.  What do you mean by maxterm?
     11.  Define Gate.
     12.  What is the function of shift register?

PART-B

    13.  Express the following functions in canonical SOP form Y=A+B1C.
    14.  Discuss in detail about the DeMorgan’s theorems.
    15.  Discuss in detail about the Full adder.
    16.  Add the numbers-5 and -2 using 2’s compliment method. Assume 4-bit word register.
    17.  Draw the diagram of D flip-flop and explain its function.
    18.  Multiply (11011)2 by (101)2   
    19.  Solve the following Binary numbers into its equivalent Octal and Hexadecimal numbers
a)      (101011)2
b)      (11011110)2

PART-C

     20.  Explain the Master-Slave operation of the JK flip-flop with neat diagram.
     21.  Discuss in details about the different types of counters.
     22.  Explain mod-10 counter with neat diagram.
     23.  What is universal building block? Explain.
     24.  Explain RS flip-flop and T flip-flop with truth tables.

APRIL-2012                                                                                                               SAU1A

PART-A

    1.      What is computer?
    2.      What is meant by translator?
    3.      What is flip-flop?
    4.      Define Universal logic gates with example.
    5.      State demorgan’s theorem.
    6.      List any two number representations in binary.
    7.      What is meant by Excess three codes?
    8.      What is synchronous counter?
    9.      With an example, define registers.
    10.  What is meant by Multiplexer?
    11.  What is decoder?
    12.  List out the operations of ALU.

PART-B

     13.  Write short notes on computer language.
     14.  Discuss the basic logic gates with truth table.
     15.  Explain briefly the complement numbers.
     16.  Design a synchronous RS flip-flop with logic circuit.
     17.  Explain briefly the principle of encoder with diagram.
     18.  Simply the following Boolean equation using functions and constructs the logic diagram F=xy+x’y+yz.
     19.  Discuss the programmable logic arrays.

PART-C

     20.  Discuss the most significant development in each generation of computers.
     21.  Convert the following.
a)      (253.23)10 =( ? )8
b)      (10001.10001)2= ( ? )16
c)      (F8E6.39)16=( ? )10
d)     (175.165)8 = (? )10
      22.  Simplify the following Boolean equation using Karnaugh Map.
             Y=A’BCD+ABC’D’+ABC’D+ABCD+ABCD’+AB’C’D+AB’CD+AB’CD.
      23.  Explain briefly the synchronous counters with timing diagram.
      24.  What is meant by adder? Explain the three input full adder with logic diagram and truth table.

NOVE-2012                                                                                       SAU1A
   
Part-A
    
     1.      Define: Complement Numbers.
     2.      What is meant by translator?
     3.      What is the base of the number system?
     4.      Draw the symbols of basic logic Gates.
     5.      Expand ASCII and EBCDIC.
     6.      Define four variable karnaugh map.
     7.      What is meant by synchronous counter?
     8.      What is flip-flop?
     9.      What is meant by registers? Give any two examples.
     10.  What is PLA?
     11.  What is meant by Encoder?
     12.  Define main memory.
Part-B

     13.  Explain the characteristics of computer.
     14.  Convert the following a) (127.85)10=(?)2b)(175.165)8=(?)10
     15.  Discuss the basic theorems of Boolean Algebra.
     16.  Explain the principle of master slave flip-flop using logic circuit.
     17.  Explain the design of decoders with diagram.
     18.  Explain a 1*16 bit multiplexer with truth table.
     19.  Explain the ASCII and Gray code with example.
PART-C

     20.  Explain the following
a)      Computer language
b)      Operating systems.
      21.  Explain the universal logic gates with truth table.
      22.  Minimize four variables Boolean equation using K-map method and implement it using NAND gates.
          F=WXY’Z’+WZY’Z+WXYZ’+WXYZ
       23.  Describe the design of the synchronous counter and explain with truth table.
       24.  Design the logic diagram of adder and subtractor with truth table.

APRIL-2013                                                                                  SAU1A

                                               PART-A

1. Define: Computer Languages.
2. What is a Compiler?
3. What are the different categories of computers?
4. What is unsigned binary number?
5. What are combinational logic circuit?
6. What is meant by truth table?
7. What is logic gate?
8. What is flip-flop? Draw the logic diagram of RS flip-flop.
9. What is meant by PLA?
10. Define: Universal shift register.
11. What is main memory?
12. Write the truth table of three input full adder.

                                         PART-B

13. Explain the components of Computer system with a neat block diagram.
14. Discuss the sum of the products and product of sums with examples.
15. Simplify the following Boolean expression
             z=a'bc+ab'c'+ab'c+abc'+abc
16. Discuss briefly the 4-bit input shift register with timing diagram.
17. Explain briefly the read only memory.
18. Discuss the 16-to-1 multiplexer with Truth table.
19. Convert the following
         a) (127.85)10=(?)2
         b) (175.165)8=(?)10

                                                PART-C
20. Explain the feature of each generation computers.
21. Discuss the basic and universal logic gates with logic circuit and TT.
22. Explain the McCluskey method of minimizing Boolean expression, with example.
23.Explain briefly the three bit binary ripple counter with truth table.
24. Discuss the design of the circuit using PLA with four inputs and four ontputs 


NOVE-2013                                                      SAU1A

PART-A

1. List the characteristics of a computer.
2. Define 'Operating System'.
3. What is the decimal equivalent of binary 1011.11?
4. Define 'Binary Logic'.
5. Explain the operation of a NAND gate with truth table.
6. Define the dual of any statement S in a Boolean algebra B.
7. Prove the theorem of Boolean algebra  x+1=1.
8. Define 'combinational  circuit's'.
9. What is an encoder?
10. What is a decoder?
11. What is arithmetic and logic unit?
12. List the set of mirco-operations for the accumulator.

PART-B

13. Discuss about computer language.
14. Discuss about error-detection, excess-3 and 2421 codes with an example.
15. Convert the expressions to sum-of-products term (A’+C)(A’+B’+C’)(A+B’).
16. Explain any five basic theorems of Boolean algebra.
17. Explain JK Master-Slave flip-flop.
18. Draw the block diagram of a 4-to-1 line multiplexer and explain the operation by means of a function              table.
19. Explain the design of logic circuit.

PART-C

20. Explain the detailed block diagram for computer.
21. Discuss about 1' s , 2's and 9's amd 10's complements with suitable examples.
22. Use a Karnaugh map to find a minimal sum for E=y't'+y'z'+yzt'+x'y'zt and implement them in universal           logic.
23. Draw the logic and block diagram of a full adder and explain the operation by means of a truth table.
24. Explain the design of control unit using miro-program control.



APRIL-2015                                                                              SAU1A

PART-A

1. Define the terms: Hardware and Software
2. What is a Compiler?
3. Convert the Hexadecimal (B65F) into its decimal equivalent.
4. Discuss the operation of a AND Gate with four input devices.
5. Prove the theorem of Boolean algebra x+x=x.
6. Write the Absorption and Associative laws.
7. Define 'Multiplexer'.
8. What is an encoder?
9. What is the need of a counter in digital computer?
10. List the steps involved in the design of an ALU.
11. List any four CPU registers with its function.
12. What is PLA?

PART-B

13. Discuss about various binary codes.
14. Write the procedure for subtraction with r' s and (r-1)'s complement.
15. Explain the concept of D Flip-Flop
16. Explain the construction and working of RS flip-flop.
17. What is the need of a counter in digital computer? Draw the block diagram for a 3 bit binary      
      ripple counter.
18. Describe the functioning of 3 x 8 decoder with the help of a logic diagram.
19. Show how to build a half-adder.


PART-C

20. Discuss about generation of Computers.
21. Perform the subtraction with the following binary numbers using 2's and 1's complements:
         a) 72532 - 3250
         b) 3250 - 72532
22. Use a Karnaugh map to find a minimal sum for e=xy'+xyz+x'y'z'+x'yz and implement them in              universal logic.
23. Describe the operation of binary parallel adder with logic circuits.
24. Describe in detail, the design of an arithmetic unit of a computer.


APRIL-2016                                                            SAU1A

Part - A

1. Convert the number (0.1011)2 into decimal number.
2. What is binary number?
3. What do you mean 10's complement?
4. What is meant by universal shift register?
5. Define logic gate.
6. What is the use of K-Map?
7. List two important functions of an ALU.
8. Differentiate State RAM and Dynamic RAM.
9. What is meant by Flip-Flop memory?
10. What is meant by combination logic circuit?
11. Convert the following : a) (10A4)16= ( )2   b) (650)10 = ( )16
12. Give importance of the Exclusive OR gate with their truth table.

Part - B

13. Using ones complement arithmetic perform the following numbers using 4-bits word
        a)  (-2) + (-5)      b) (5) - (2)
14. Design and implement a Gray to Binary encoder using XOR gates.
15. Draw a four line to one line multiplexer and explain its operation with a truth table.
16. Draw the logic diagram of modulo-3 counter and explain its sequence of operation.
17. What are the advantages and disadvantages of RAM over ROM?
18. Explain the working principles of a Decoder.
19. How are Floating point numbers represented in digital computer?

Part -C

20. Prove that NOR is a Universal gate.
21. Explain a) Excess-3 code b) Gray code.
22. Using K-Map, simple f(A,B,C,D) = ∑ (0,1,3,4,6,8,11 ) + d( 5,7,15) and realize the circuit.
23. Explain how shift registers are used to perform arithmetic operations.
24. Design a Half- Subtractor and Full Subtractor.










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