We, Human Beings are social creatures and communication is the most important aspect of our daily lives that we use to convey information, ideas and thoughts with each other. With the advent of digital electronics, a faster and more efficient communication is now possible. But this merit comes with an uncertainty of the received data being error-free. Communication channel in which the data gets transmitted in, is very much likely or always has a chance of inducing an error in the data being transmitted. This is because the channel can be affected by various factors such as noise, interference, attenuation, distortion, crosstalk, and jitter. These factors can cause errors in the signal being sent. The goal of this project is not just transmitting and receiving the data, but to transmit signal such that, the person receiving this data at the receiving end is able to confirm its reliability. The aim is to bring about this reliable transmission of data with this technique known as Cyclic Redundancy Check or CRC for short. To sum it all up we will be using CRCs to detect any degree of error in a message signal with the ultimate goal of making digital communication always reliable.