Keep in mind today:
” In computer science, BNF (Backus Normal Form or Backus–Naur Form) is one of the two  main notation techniques for context-free grammars, often used to describe the syntax of languages used in computing, such as computer programming languages, document formats, instruction sets and communication protocol; the other main technique for writing context-free grammars is the van Wijngaarden form. They are applied wherever exact descriptions of languages are needed: for instance, in official language specifications, in manuals, and in textbooks on programming language theory.
Many extensions and variants of the original Backus–Naur notation are used; some are exactly defined, including Extended Backus–Naur Form (EBNF) and Augmented Backus–Naur Form (ABNF).
A BNF specification is a set of derivation rules, written as
<symbol> ::= __expression__where <symbol> is a nonterminal, and the __expression__ consists of one or more sequences of symbols; more sequences are separated by the vertical bar, '|', indicating a choice, the whole being a possible substitution for the symbol on the left. Symbols that never appear on a left side are terminals. On the other hand, symbols that appear on a left side are non-terminals and are always enclosed between the pair <>.
The ‘::=’ means that the symbol on the left must be replaced with the expression on the right”
Everyone heared about the Arduino for Atmel. Now it’s posible to work with the modern PIC and use a arduino like board, the Jaluino.
“JAL (Just Another Language, version 2) is an open source programming language built for programming PIC microcontrollers. If electronics is your thing, JAL is for you!”
A beginner’s reference to the programming syntax of the Arduino microcontroller.Includes information on program structure, variables, datatypes, arithmetic, constants, flow control, and most of the common functions of the core library. Also includes an appendix with schematics and simple programs for several common tasks.
A very great work, which shows the abilities of the Lego Mindstorms. The building instructions aren’t online yet, but hopefully follow soon.