Sucess story of Carol Santhosh & Philip.K.V in JK Flip Flop implementation

Digital Electronics
J- K Flip Flop


By Carol Santhosh & Philip.K.V
18MC009,18MC24

INTRODUCTION
Our Digital Electronics project is about J-K Flip Flop. A flip flop is an electronic circuit with two stable states that can be used to store binary data. The stored data can be changed by applying varying inputs. Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems. Flip-flops and latches are used as data storage elements. It is the basic storage element in sequential logic.

Story of Harish and Dan in implementing a Half Adder

For Digital Electronics Subject, we had taken Half adder. Basic design and construction of project was explained by our DE faculty Mr.R.Yasodharan, AP/MCT. Then we started to analyse about component working and its implementation, after we starting hiccups we implemented Half adder in bread board. Following are the description of it.

The half adder adds two single binary digits A and B. It has two outputs, sum (S) and carry (C). The
carry signal represents an overflow into the next digit of a multi-digit addition.

Sucess Story of Hari & Ravi's in Implementing Half Adder

       This day is a memorable day in our life. Today we did a mini project on implementation of half adder using IC’s. This is our first step in our journey towards success. It gives us a great pleasure in sharing our experience of doing this project. First we were confused on choosing the topic for our project. Then we came to a conclusion of implementing half adder using IC’s. First we purchased all the required parts for doing the project. Then we started to build the project. We made all the connections with reference to a circuit diagram. After building the circuit, we went on for testing it. We were so happy that we did it right in our first attempt. We completed the whole project in just 2 hours. 

Story of Shrithika & Supriya on their SR Latch project

We Shrithika Pravin(18MC036) and Supriya.E(18MC038) of II B.E Mechatronics Engineering in SNS College of Technology, Coimbatore happy to write our small success story here.

As part of learning Digital Electronics through project, we implemented SR latch in bread board and executed it successfully. We thank our Digital electronics faculty Mr.R.Yasodharan for motivating us to do the project. So, as our first digital electronics project, we have made an SR latch using IC 7400 NAND gate. We bought the required components from a nearby electronic store. So, the components we used for this project are:

●     Breadboard

●     IC 7400

●     Input buttons

●     LED

●     1K ohm resistors

●     9V battery

●     Connecting wires

With reference to the circuit diagram obtained from internet, the necessary circuit connections were made on the bread board. The suitable output  with indicating LED lights and the truth table was obtained.

This mini project helped us to study the various gates and IC circuits before choosing and implementing the required project. We went through many videos involving digital electronics projects by which we were able to learn how the component connections are made on the bread board and the applications of those circuits involved.

Therefore, by this project of SR latch we worked on, we were able to know about all the electronic components and enhance our knowledge. It was quite easy and interesting to work on such digital electronic circuits. 

BCD Adder, Mux (Multiplexer) & DeMux(Demultiplexer)

BCD stand for binary coded decimal. Suppose, we have two 4-bit numbers A and B. The value of A and B can varies from 0(0000 in binary) to 9(1001 in binary) because we are considering decimal numbers.

BCD or Binary Coded Decimal is that number system or code which represents the 10 decimal digits in terms of binary numbers.

The following is table for Decimal number and it’s Binary Equivalent:

As seen above, when the Decimal equivalent exceeds 9, then we start writing the BCD equivalent as two Binary equivalents.

Now let’s have a look at some examples:

0101 + 0011 = 1000 (Binary addition). [If you compare this with the above table, you’ll find that 0101 is 5; 0011 is 3 and 1000 is 8.] We can do the same for every number whose sum comes to less than or equal to 9.

But if the addition is greater than 9,then what!

Simple! Let’s take an example:

0101 + 1000 = 1101 . [From table, 0101 is 5; 1000 is 8 and 1101 is 13.]

But the BCD equivalent of 13 is 0001 0011.

So we take the Binary addition obtained i.e 1101 and add 0110 (decimal 6) to it.

The result obtained is 1101 + 0110 = 1 0011 where the last 4 bits 0011 represent 3and 1(can also be written as 0001, which means 1 in decimal equivalent). Thus we obtain 0001 0011 as final answer!

Thus, for any addition greater than 9, add binary equivalent of 6 to the Binary sum obtained and you’ll get it’s BCD equivalent.

1. Add two BCD numbers using ordina7 binary addition. 
2. If four-bit sum is equal to or less than 9, no correction is needed. The sum is in proper BCD form.
3.  If the four-bit sum is greater than 9 or if a carry is generated from the four-bit sum, the sum is invalid. To correct the invalid sum, add 0110 to the four-bit sum.
4.  If a carry results from this addition, add it to the next higher-order BCD digit. 
5. Thus to implement BCD adder we require : 4-bit binary adder for initial addition Logic circuit to detect sum greater than 9 and One more 4-bit adder to add 0110 in the sum if sum is greater than 9 or carry is 1.

For BCD Adder - Click here

For Multiplexer and Demultiplexer - Click here

Comparator

Digital or Binary Comparators are made up from standard AND, NOR and NOT gates that compare the digital signals present at their input terminals and produce an output depending upon the condition of those inputs.

Code Converters

Numbers are usually coded in one form or another so as to represent or use it as required. For instance, a number ‘nine’ is coded in decimal using symbol (9)d. Same is coded in natural-binary as (1001)b. While digital computers all deal with binary numbers, there are situations wherein natural-binary representation of numbers in in-convenient or in-efficient and some other (binary) code must be used to process the numbers.

Mechatronics - Puzzle #9 - Sand Clock?

We have two sand clock, one have the capacity to show 4 minutes and other have the capacity to 
 show 7 minutes. 


By using the two sand clocks, you can use it single or combination of sand timers.

Mechatronics - Puzzle #8 - Travel through?

Four people are traveling to different places on different types of transport.

Their names are: Ram, Sam, Raj and Viru.

They either went on train, car, plane or ship. 

Mechatronics - Puzzle #7 - Find the missing number ?

Please enjoy this brain teaser compliments of puzzle master Mr.Wes Carroll.

Find the Missing number