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CS302 16 July 2012 Current Paper

Mcques were mostly new some belongs to past paper.

FIFO memory Implementation            (5 Marks)

Some binary values or number that were for converting into the Hexa decimal number                                              (5 Marks)

2 Application of ROM              (5 or 3 Marks )

Name of memory operstions               (2 Marks)
 In the highest frequency component in an analog signal is 20 KHz, what is the minimum sample frequency                                                     (2 Marks)

today paper (total 40 mcq's and 4 2marks Ques 4 3marks ques and 4 5marks ques)

Question No: 1 ( Marks: 1 ) - Please choose one A 8-bit serial in / parallel out shift register contains the value “8”, _____ clock signal(s) will be required to shift the value completely out of the register.

► 1

► 2

► 4

► 8 (Page 356)

Question No: 2 ( Marks: 1 ) - Please choose one

The divide-by-60 counter in digital clock is implemented by using two cascading counters:

► Mod-6, Mod-10 (Page 299)

► Mod-50, Mod-10

► Mod-10, Mod-50

► Mod-50, Mod-6

The minimum time for which the input signal has to be maintained at the input of flip-flop is called ______ of the flip-flop.

► Set-up time

► Hold time (Page 242)

► Pulse Interval time

► Pulse Stability time (PST)

Question No: 4( Marks: 1 ) - Please choose one

A Nibble consists of _____ bits

► 2

► 4 (Page 394)

► 8

► 16

Question No: 5 ( Marks: 1 ) - Please choose one

The output of this circuit is always ________.

► 1

► 0

► A

The total amount of memory that is supported by any digital system depends upon ______

► The organization of memory

► The structure of memory

► The size of decoding unit

► The size of the address bus of the microprocessor (Page 430)

________ is used to simplify the circuit that determines the next state.

► State diagram

► Next state table

► State reduction

► State assignment (Page 335)

A multiplexer with a register circuit converts _________

► Serial data to parallel

► Parallel data to serial (Page 356) rep

► Serial data to serial

► Parallel data to parallel

A positive edge-triggered flip-flop changes its state when ________________

► Low-to-high transition of clock (Page 228)

► High-to-low transition of clock

► Enable input (EN) is set

► Preset input (PRE) is set

Flip flops are also called _____________

► Bi-stable dualvibrators

► Bi-stable transformer

► Bi-stable multivibrators (Page 228)

► Bi-stable singlevibrators

DRAM stands for __________

► Dynamic RAM (Page 407)

► Data RAM

► Demoduler RAM

► None of given options

________ is used to minimize the possible no. of states of a circuit.

► State assignment (Page 341)

► State reduction

► Next state table

► State diagram

________ is used to simplify the circuit that determines the next state.

► State diagram

► Next state table

► State reduction

► State assignment (Page 335)

FIFO is an acronym for __________

► First In, First Out (Page 424)

► Fly in, Fly Out

► Fast in, Fast Out

► None of given options

______ of a D/A converter is determined by comparing the actual output of a D/A converter with the expected output.

► Resolution

► Accuracy (Page 460) rep

► Quantization

► Missing Code

and many more from old paper



Subjective

3. Differentiate between Moore machine and Mealy machine. (Marks 2)

Answer:- Page 318

The Sequential circuit whose output depends on the current state and the input is known as Mealy Machine. Sequential circuit whose output is determined by the current state only is known as Moore Machine.

Q No. 6 How can calculate the frequency of an unknown signal?

Name three Operations that can be performed on FLASH Memory

2. Explain Rotate Right Operation of shift register with the help of Diagram. (Marks 3)

Question No: ( Marks: 5 )

Explain Memory Select or Enable Signals

Explain application of demultiplexer

3: Explain the next-state table with the help of a table for any sequential circuit?