A taskbar is the bar on a computer screen, usually at the
bottom, that gives quick access to open apps, pinned programs, the Start menu,
notifications, and system controls like volume and Wi‑Fi.
What it does
The taskbar helps you switch between windows, launch
apps faster, and see what is currently open on your desktop. It also often
includes the clock, system tray icons, and shortcuts to frequently used
programs.
Simple example
If you open Chrome, File Explorer, and Settings, each
may show up as a button on the taskbar, so you can click any one to bring it
back to the front quickly.
Bottom line
In short, the taskbar is one of the main navigation bars
in Windows that keeps your most-used tools within easy reach.