USU (operating system)

USU linux (Bulgarian: УСУ; Учи Свободен с Убунту) is a Bulgarian open-source desktop operating system built around the KDE desktop environment and based on the popular free Linux distribution, Ubuntu.

About USU
USU can be downloaded in three main editions: Desktop, Mini and Netbook, each one with its own features and target audiences. Each variation can be downloaded for free as Live CD/DVD ISO images which support 32-bit and 64-bit processors. USU's default system language is Bulgarian, but the system language can be changed during installation by using the F2 key.

Features
USU Desktop was originally created to be used as a learning tool. This edition of USU includes a wide range of educational apps, such as "Celestia" (an educational space simulator), "MuseScore" (A music score typesetter), "Blender" (A popular 3D rendering software), "Kalgebra" (A basic mathematical calculator), and much more.

System requirements
USU's approximate system requirements are as follows:


 * Processor with a working frequency of ~900 MHz.
 * A minimum of 384 MB RAM or 512 MB of RAM if using as live CD without SWAP.
 * ~7 GB of free space on hard disk. (used for OS installation)
 * A DVD reader.
 * A monitor, with a minimum resolution of 640×480. However, optimally, the resolution should be 800×600 and up.
 * A video card capable of displaying 16-bit colors and a resolution of 640×480. (or as mentioned above, an optimal resolution of 800×600)