PUBLIC MARKS from tadeufilippini with tags gnu & programming

Tutorial Ten - Animation Do you know how movies and cartoons work? Have you ever made a "flipbook?" Well, before we get into how to do animation using a computer, it helps to understand how animation really works. When we see moving pictures on a screen, they're not really moving. What actually happens is that a sequence of still pictures -- like photographs -- are flashed on the screen so quickly that you can't tell how fast it's happening. About 30 times every second, the screen is cleared and a new picture takes the place of the old one. If we were to slow it down it would look like this:

Tutorial Four - Variables In the previous tutorials, we learned how to print messages and numbers on the screen and how to do math using the print command. This is very good to know how to do, but it doesn't really help us use the full power of the computer. Computers do more than simple things like add numbers and print messages. A big part of what computers do is to store information, so it can be used later. This is where "variables" come in handy. Variables are a way to save a message or a number so that you can use it later. Let's try an example.

Tutorial Three - Drawing Pictures One of the most exciting things to do with a computer is to draw things with it. Usually you would do this with a paint program, but what if you didn't have one? Or what if you wanted to draw a circle, and then have it move across the screen? This tutorial will show you how to do basic drawing. First, let's try drawing a few dots.

Tutorial Two - Doing your Math homework. . .the easy way

Tutorial One - Welcome to BASIC-256

The BASIC-256 project (formerly KidBASIC) has changed its name to avoid any potential conflict/confusion with another project with the same name. Thank you for your patience and continued support. Introduction BASIC-256 is an easy to use version of BASIC designed to teach young children the basics of computer programming. It uses traditional control structures like gosub, for/next, and goto, which helps kids easily see how program flow-control works. It has a built-in graphics mode which lets them draw pictures on screen in minutes, and a set of detailed, easy-to-follow tutorials that introduce programming concepts through fun exercises. BASIC-256 is licensed under the GNU public license, which means that it's free to download, modify, and share.

Bem vindo ao site do mutirão de tradução do livro "How to Think Like a Computer Scientist: Learning with Python", de Allen Downey, Jeffrey Elkner e Chris Meyers. Todo o conteúdo deste site pode ser reproduzido livremente, nos termos da licença GNU FDL (Free Documentation License)

VirtualBox -- professional, flexible, open ¶ innotek VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. Some of the features of VirtualBox are: * Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox. * Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers. * Guest Additions for Windows and Linux. VirtualBox has special software that can be installed inside Windows and Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these Guest Additions are mouse pointer integration and arbitrary screen solutions (e.g. by resizing the guest window). A number of extra features are available with the full VirtualBox release only (see the "Editions" page for details): * Virtual USB Controllers. VirtualBox implements a virtual USB controller and allows you to connect arbitrary USB devices to your virtual machines without having to install device specific drivers on the host. * Remote Desktop Protocol. Unlike any other virtualization software, VirtualBox fully supports the standard Remote Desktop Protocol (RDP). A virtual machine can act as an RDP server, allowing you to "run" the virtual machine remotely on some thin client that merely displays the RDP data. * USB over RDP. With this unique feature, a virtual machine that acts as an RDP server can still access arbitrary USB devices that are connected on the RDP client. This way, a powerful server machine can virtualize a lot of thin clients that merely need to display RDP data and have USB devices plugged in. * Shared folders. Like many other virtualization solutions, for easy data exchange between hosts and guests, VirtualBox allows for declaring certain host directories as "shared folders", which can then be accessed from within virtual machines. Versions ¶ VirtualBox comes in different versions, depending on your needs. Please see the Editions page for details. Screenshots ¶ We have put together a small tour of the VirtualBox features on the Screenshots page. Press Coverage ¶ We maintain a link list to press articles about VirtualBox on the Press page.