This document summarizes several digital circuit experiments to be conducted in a digital circuits lab session. It includes experiments on code converters, binary addition/subtraction, multiplexers, encoders, decoders, and various counter circuits. Encoders and decoders are explained in more detail. Encoders translate information from multiple inputs into a binary code on fewer outputs, while decoders perform the reverse operation. Both are used for applications involving motion monitoring and control by translating between rotary/linear positions and digital signals. The lab session will provide hands-on experience designing and building these basic digital components and circuits.

1. EC8361-ANALOG AND DIGITAL
CIRCUITS LABORATORY
SESSION -3
Presented by
Ms.M.Manju AP/ECE
Ms.P.Sivalakshmi AP/ECE
R.M.K COLLEGE OF ENGINEERING AND TECHNOLOGY

2. LIST OF DIGITAL EXPERIMENTS
 1. Design and implementation of code converters using logic gates
 (i) BCD to excess-3 code and vice versa
 (ii) Binary to gray and vice-versa
 2. Design and implementation of 4 bit binary Adder/ Subtractor and BCD adder using IC 7483
 3. Design and implementation of Multiplexer and De-multiplexer using logic gates
 4. Design and implementation of encoder and decoder using logic gates
 5. Construction and verification of 4 bit ripple counter and Mod-10 / Mod-12 Ripple counters
 6. Design and implementation of 3-bit synchronous up/down counter

3. ENCODER
 An Encoder is a combinational circuit that performs the reverse
operation of Decoder.
 It has maximum of 2^n input lines and ‘n’ output lines, hence it
encodes the information from 2^n inputs into an n-bit code.
 It will produce a binary code equivalent to the active High
input.

4. ENCODER Truth table, logic diagram

5. VIRTUAL LAB ENCODER CIRCUIT

6. USES OF ENCODERS
Encoders are used to translate rotary or linear
motion into a digital signal. Usually this is for the
purpose of monitoring or controlling motion
parameters such as speed, rate, direction, distance
or position.

9. DECODER
 An decoder is a combinational circuit, similar to de-multiplexer
but without any data input .
 It converts an n-bit binary input code(data) into 2n output
lines, such that each output line will be activated for only one of
the possible combinations of inputs.
 No. of Inputs==Output then called code converters.

11. USES OF DECODERS

12. DIGITAL TRAINER KIT

13. 4-BIT RIPPLE COUNTER

14. 4-BIT RIPPLE COUNTER

15. 4-BIT RIPPLE COUNTER

16. 4-BIT SYNCHRONOUS COUNTER

18. 4-BIT SYNCHRONOUS COUNTER

19. THANK YOU