This pie chart visualizes laptop sales by brand, displaying the proportion of units sold for each manufacturer. Built with D3.js (v6.7.0), it uses `d3.pie` and `d3.arc` to generate the sectors, with each slice labeled by brand and unit count. A color-coded legend at the bottom identifies each brand, while data is loaded from a remote CSV file. The visualization also supports reusable chart creation through a separate `scatterPlot.js` module defining a configurable pie chart function.