Implementation of Software for Learning Message Transmission Using Morse Code

Abstract

The article presents the implementation of software for training message transmission using Morse code. This is a method of sign coding when letters of the alphabet, numbers, punctuation marks and other symbols are represented as sequences of short and long signals called dots and dashes. It is intended for transmission over serial communication channels. A unique feature of Morse code is the ability to be encoded and decoded by humans without the use of special terminal devices. The paper shows a software implementation of processing input characters using a telegraphic key, it includes: various mathematical requirements and conditions that allow you adjusting to each user, provided that his input speed will either fall or remain unchanged. However, it is possible to adjust the minimum duration threshold in such a way that the system will slowly adapt to a slow increase in input speed. At the same time, the higher the value of the minimum threshold, the faster the adaptation is; however, it will fall within the limit of the maximum input speed that the device can recognize. During the implementation of the program, a flow chart of message transliteration, signal reception and transmission was developed. The whole program implements the following functions: a simple and intuitive translator, with audio output, a simulator for consolidating the skill of entering Morse code using a key; consolidating the skills of recognition and decoding by ear. To create the final application for training, the Processing toolkit was chosen, since its key parameter when choosing a development tool has a simple writing syntax to increase the speed of writing code, as well as the ability of the environment to work with the communication channel of the microcontroller.