Digital Electronics Computer and Organisation

Amity Solved Assignments

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Q1.  What are flip flop circuits in digital electronics? Discuss race around condition in J-K Flip Flop

Q2.  What is virtual memory? How address mapping is done in cache memory? Elaborate your answer with examples.

Q3.   Design 8:1 Mux for a given function, f=S (0, 1,5,7,9, 13

Q4.  How branching takes place in Instruction pipeline. Explain with suitable examples

Q5. Write short notes on any three of the following.

  1. a) Microprocessor
  2. b) Modes of data transfer.
  3. c) I/O processor
  4. d) Associative memory
  5. e) Software and Hardware interrupt

Q6.  Design a mod-15 counter. Explain the various steps in designing the counter

Q7.  What are shift registers? Design a 8 bit shift register with features like PISO, SISO, SIPO and PIPO

Q8.  Compare RISC & CISC architecture.


Part B

Q1. Give the organization of Micro programmed control unit and explain its operation. Explain the role of address sequencer in detail. If you convert your control unit to hardwired unit, what are the changes you will observe?

Q2. Explain in details the block diagram of timing and control unit.


Amity Online Multiple Choice Question

QUESTION 1: Video teleconferencing means

  1. Sitting together and seeing video film
  2. A conference organized in TV studio
  3. Seeing the conference on television
  4. Sitting at distance and conferencing with the help of computer network


QUESTION 2: In the ‘information theory’the information content of a message is measured by(Where pk is the probability of occurance of event)

  1. I = pk log 1/pk
  2. I = pk log Pk
  3. I = log 1/pk
  4. I = log pk


QUESTION 3: The baud rate

  1. is always equal to bit transfer rate
  2. is equal to twice the bandwith of an ideal channel
  3. is not equal to signalling rate
  4. is equal to one half the bandwith of an ideal channel


QUESTION 4: The code which provides parity check is

  1. Baudot
  2. ASCII
  4. CCITT – 2


QUESTION 5: Full duplex operation

  1. Required two pair of cables
  2. Can transfer data in both directions at once
  3. Requires modems at both ends of the circuit
  4. All of the above


QUESTION 6: The RS – 232 C interface

  1. Interconnects data sets and transmission circuits
  2. Uses several different connectors
  3. Permits custom wiring of signal lines to the conductor pins as desired
  4. All of the above


QUESTION 7: Size of an integer in bytes is

  1. 1 bytes
  2. 2 bytes
  3. 3 bytes
  4. 4 bytes


QUESTION 8: Transistors are basically

  1. Monostate devices
  2. Bistate devices
  3. Tristate devices
  4. None of the above


QUESTION 9: The base of octal number system is

  1. 200%
  2. 800%
  3. 1000%
  4. 1600%


QUESTION 10: A hexadecimal digit can replace ______ bit binary number

  1. 200%
  2. 400%
  3. 600%
  4. 800%


QUESTION 11: The binary equivalent of decimal 18 is

  1. 11101100%
  2. 11000100%
  3. 10010000%
  4. 1001000%


QUESTION 12: Number of bits in an ASCII number

  1. 600%
  2. 700%
  3. 800%
  4. None of the above


QUESTION 13: 2’s complement of 11011 is

  1. 10100%
  2. 1011000%
  3. 10000%
  4. 111100%


QUESTION 14: Which of the following is not a essential part of computer system

  1. Address bus
  2. Multi bus
  3. Data bus
  4. Control bus


QUESTION 15: The declaration of function in calling program is known as

  1. Prototype
  2. Passing argument
  3. Reference
  4. None of the above


QUESTION 16: Error which is diagnosed by compiler is

  1. Semantic error
  2. Logical error
  3. Syntax error
  4. None of the above


QUESTION 17: A derived data type is a combination of other already known types

  1. “TRUE,”
  2. “False,”
  3. Partially True
  4. None of the above


QUESTION 18: A two-dimensional array of character is known as an array of strings

  1. “TRUE,”
  2. “False,”
  3. Sometimes True
  4. None of the above


QUESTION 19: Which of the following is basic data type?

  1. Array
  2. Character
  3. Structure
  4. Union


QUESTION 20: The fastest memory is

  1. Hard disk
  2. Virtual memory
  3. Cache memory
  4. Magnetic tape


QUESTION 21: Which is not the correct size of hard disk?

  1. 610 MB
  2. 680 MB
  3. 1.2 GB
  4. 2.4 GB


QUESTION 22: A microprocessor is a complete CPU on a single chip

  1. “TRUE,”
  2. “False,”
  3. Partially True
  4. Cannot be determined


QUESTION 23: “In the file organisation, the access of records is slowest in”

  1. Indexed sequential file organization
  2. Sequential file organisation
  3. Direct file organization
  4. Relative file organization


QUESTION 24: The file organization in which each record has at least one pointer type field is

  1. Sequential file organization
  2. Randon file organization
  3. Linked file organization
  4. None of the above


QUESTION 25: In order to reduce quantization noise in analog to digital conversion

  1. Increase the number of standard amplitudes
  2. Send pulses whose sides are more vertical
  3. Use an Rf amplifier in the receiver
  4. Increase the number of samples/record


QUESTION 26: To permit the selection of 1 out of 16 equiprobable events the number of bits required is

  1. 200%
  2. log10 16
  3. 800%
  4. 400%



  1. Read write memory
  2. Volatile Memory
  3. Random Access Memory
  4. All of the above


QUESTION 28: Magnetic disks

  1. Are read only devices
  2. Have data recorded in form of magnetized and non magnetized spots
  3. Sequential acess devices
  4. All of the above


QUESTION 29: The storage capacity of a Optical Disk is determined using

  1. “Number of recording surface, number of tracks per surface, number of sectors per track”
  2. physical dimensions of the disk
  3. Weight of the diskl
  4. None of the above


QUESTION 30: Memory is organised into hierarchical way because

  1. CPU cannot access main memory directly
  2. Main memory cannot store large amount of data
  3. Use of auxiliary storage increases speed of computation
  4. None of the above


QUESTION 31: Data backup is taken

  1. To safegaurd data in case of catastrophic eventualities
  2. To use the data set again and again
  3. To supply data at high rate
  4. None of the above


QUESTION 32: Which device uses laser beam technology to read and write data

  1. Magnetic devices
  2. Optical devices
  3. Charged device
  4. None of the above


QUESTION 33: Which of the following is not fitting with others

  1. Trackball
  2. Joystick
  3. Mouse
  4. Web Cam


QUESTION 34: Tick the odd one out

  1. Windows
  2. DOS
  3. LINUX


QUESTION 35: Output printed through a printer is referred to as

  1. Soft copy output
  2. Hard copy output
  3. Temporary copy output
  4. Volatile output


QUESTION 36: Plotters are very useful in application such as

  1. Financial accounting
  2. Word processing
  3. Computer aided design
  4. All of the above


QUESTION 37: “High quality, high speed, high volume and non-impact are terms associated with”

  1. Laser printers
  2. Dot Matrix printers
  3. Inkjet printers
  4. Plotters


QUESTION 38: Point the odd one out

  1. Sound
  2. Animation
  3. Graphics
  4. WWW


QUESTION 39: Which of the following cannot be classified as sysytem software

  1. Linux
  2. Windows 2000
  3. MS Dos
  4. Oracle


QUESTION 40: Which of the these cannot be considered as an element of Multimedia computer

  1. CD ROM
  2. Speakers
  3. Microphone
  4. None of the above


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