The stopwatch coded here will be able to keep time till 10 minutes. It will be a 4 digit stopwatch counting from 0:00:0 till 9:59:9. The right most digit will be incremented every 0.1 second, when it reaches 9 it will increment the middle two digits, which represent the second count. When it reaches 59 seconds it will increment the right most minute display. The stopwatch will be in the format M:SS:D. How to Create an Accurate Delay in Verilog: To make the stop watch an accurate device we need to be able to produce an accurate 0.1 second delay. I have already explained how to do this before in my decimal counter in verilog post. But since it is of great importance to the design will be explained in more detail here. Since we know that the BASYS2 (the one I am using, yours may be different) has a 50 MHz clock which means that the clock cycle is repeated 50M times in one second. So to create a 0.1 second delay we multiply the clock with the required time: 50MHz * 0.1 sec =
Note: This was a post I wrote back in 2014 as I was teaching myself Verilog, but never got around to finishing the code for it and thus this post remained as a draft. I apologize that this is not in line with my other previous blog posts as it does not have a working code and is not demonstrated working in a video. But I am publishing this in hopes that someone researching this topic may find my introductory text on the topic useful. UART stands for Universal Asynchronous Receiver and Transmitter. It is a system that is a capable of sending parallel data using a serial line. As the name indicates, the UART consists of a transmitter and a receiver. The transmitter accepts data in parallel and then by using a shift register send the data out bit by bit using predetermined parameters. Similarly the receiver accepts the data serially and then compiles the data using a shift register. Data is recognized by following a fixed format while transmitting and receiving, data sent consists of a s