USU (operating system)

USU
Developer	SKSS (free culture and free software)
OS family	Linux (Unix-like)
Working state	Discontinued
Source model	Open source
Latest release	9.3 / May 12, 2016
Repository	sourceforge.net/projects/usuproject/
Marketing target	Education, End Users/Desktop
Package manager	apt
Platforms	amd64, i386
Kernel type	Monolithic (Linux)
Userland	GNU
Influenced by	Freeduc-CD
Default; user interface	KDE (since USU 8.04); GNOME (until USU 7);
License	GNU GPL and others
Preceded by	Learn free with Ubuntu
Official website	learnfree.eu

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)