LED Display Preview

A C# application that previews text and symbols as they would appear on a real LED matrix board, so customers can see the design before the physical panel is built.

Text is collected from the source (reviews, posts, messages or documents). It is cleaned: lowercased, stop words removed, tokenised and lemmatised. The text is converted to features with TF-IDF or embeddings and a classifier or language model processes it. Results such as sentiment, category or a reply are shown on a dashboard or chat interface.

Lowercasing, removing punctuation and stop words, tokenisation and stemming or lemmatisation. The cleaned text is then converted to numbers with bag-of-words, TF-IDF or embeddings.

Term frequency–inverse document frequency gives a word a high weight if it appears often in one document but rarely across all documents, so common words like 'the' get low importance.

Web Forms uses server controls and view state with an event model. MVC separates Model, View and Controller, gives full control over HTML and is easier to test.

We followed an iterative (incremental) model: requirements and a basic design first, then modules built and tested one by one, with the guide's feedback after each review. It suits a project where requirements become clearer as we build.

Unit testing of each module, integration testing of the complete flow and system testing with real inputs. Test cases with expected and actual results are listed in the report, including invalid inputs.

The current version is tested on a limited dataset or number of users. Future work includes deploying on the cloud, adding more features or languages, improving accuracy with more data and building a mobile version.