DIGITAL ELECTRONICS AND LOGIC DESIGN [ELD] EE 204 I KTU B TECH QUESTIONS FOR SECOND YEAR [S4] STUDENTS | QUESTION BANK Part - ||


APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

 DIGITAL ELECTRONICS AND LOGIC DESIGN I S4 KTU
 QUESTION PAPERS

DIGITAL ELECTRONICS AND LOGIC DESIGN [ELD] EE 204 I KTU B TECH QUESTIONS FOR SECOND YEAR [S4] STUDENTS | QUESTION BANK Part - ||

PART A

1. 11001001101.10110112 in to Decimal, Octal and Hexadecimal

2. Determine the range of signed integer numbers that can be represent using

(i) Sign-Magnitude form

(ii) 1’s Complement form

(iii) 2’s Complement form

3. Perform the following operation in 2’s complement form.

(i) -36 16+4D 16


(ii) DCSA 16 – 9B3C 16

4. a) What are the advantages of T and D flip flops? Explain.


b) Explain a architecture of a 3 bit Serial in Parallel out shift register.

5. a) With neat diagram explain the operation of three bit Johnson


PART B

counter. How it differs from a Ring counter.

b) How a successive approximation ADC works? Explain

6. a) Design a Synchronous Decade counter.

b) Design Sequence detector circuit with Mealy Model.

7.a) Write a VHDL program for Full Adder in Behavioural model


b) Compare and differentiate ROM, PLA and PAL circuits

8. Prepare a table for the first 12 integers in Binary, Grey, Excess 3 and ASCII.

9. What is Hamming code? How is the Hamming code word generated? The message “1001001” is coded in seven bit even parity Hamming code, which is transmitted through a noisy channel. 

Decode the message, assuming that at most a single error occurred in each code word.


10. What is universal gate? State and prove that NAND and NOR gates are the universal gates.

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