RTU 3rd sem Computer Engineering B.Tech. Syllabus Digital Electronics Lab

3CS9A DIGITAL ELECTRONICS LAB

1 To verify the truth tables of basic logic gates: AND, OR, NOR, NAND, NOR. Also
to verify the truth table of Ex-OR, Ex-NOR (For 2, 3, & 4 inputs using gates with 2,
3, & 4 inputs).

2 To verify the truth table of OR, AND, NOR, Ex-OR, Ex-NOR realized using NAND
& NOR gates.

3 To realize an SOP and POS expression.

4 To realize Half adder/ Subtractor & Full Adder/ Subtractor using NAND & NOR
gates and to verify their truth tables.

5 To realize a 4-bit ripple adder/ Subtractor using basic Half adder/ Subtractor & basic
Full Adder/ Subtractor.

6 To verify the truth table of 4-to-1 multiplexer and 1-to-4 demultiplexer. Realize the
multiplexer using basic gates only. Also to construct and 8-to-1 multiplexer and 1-
to-8 demultiplexer using blocks of 4-to-1 multiplexer and 1-to-4 demultiplexer

7 Design & Realize a combinational circuit that will accept a 2421 BCD code and
drive a TIL -312 seven-segment display.

8 Using basic logic gates, realize the R-S, J-K and D-flip flops with and without clock
signal and verify their truth table

9 Construct a divide by 2,4 & 8 asynchronous counter. Construct a 4-bit binary
counter and ring counter for a particular output pattern using D flip flop.

10 Perform input/output operations on parallel in/Parallel out and Serial in/Serial out
registers using clock. Also exercise loading only one of multiple values into the
register using multiplexer.

Note: As far as possible, the experiments shall be performed on bread board.
However, experiment Nos. 1-4 are to be performed on bread board only.