Ho posseduto sia un Vic20 ed un C/64, come molti della mia generazione, credo. Il Commore 64 è stato un micro computer commercializzato tra il 1982 e il 1994, dalla Commodore Business Machine (CBM). Il vero salto di qualità con il C/64 me lo fece fare un rivista scovata in un Autogril, chiamata Commodore Computer Club, che parlava praticamente solo del C/64 e aveva una forte connotazione “social”, nel senso che la rubrica della posta era inizialmente molto grande.

This week, the nodejs community had a big flame.

All was started by this blog post, which  tried to slap down node.js server because of its mono-thread nature. And node.js fight back knocking down the attacker. Let’see how.

Arduino rocks, you know. And we  we are happy to announce a new set of goodies from the Arduino Italian crew!

And if you do not know what is arduino, we have a fix for that (TM)

For the second year in a row we decided to announce our new products at Maker Faire in NYC.

Arduino 1.0, we finally froze the Arduino API, the IDE and the layout of the boards. We’ve made some minor additions to the Arduino connectors to make them more flexible. Tomorrow you will be able to download the release candidate and in 1 month of frantic testing with the community, the platform will be ready and stable.

Arduino Leonardo, a low cost Arduino board with the Atmega32u4. It has the same shape and connectors as the UNO but it has a simpler circuit. On the software side it has a nifty USB driver able to simulate a mouse , a keyboard, a serial port (with more drivers coming later). As usual for Arduino, everything will be released as open source (Core, Bootloader, Hardware).

Arduino Due, a major breakthrough for Arduino because we’re launching an Arduino board with a 32bit Cortex-M3 ARM processor on it. We’re using the SAM3U processor from ATMEL running at 96MHz with 256Kb of Flash, 50Kb of Sram, 5 SPI buses, 2 I2C interfaces, 5 UARTS, 16 Analog Inputs at 12Bit resolution and much more.

[…]

Arduino Wifi Shield. It adds Wi-Fi communication capabilities to any Arduino. Instead of using any of the classic WiFi modules on the market we wanted to have something that will provide the maximum level of hackability to the user. The shield is based on a wifi micro module made by H&D Wireless coupled with a powerful AVR32 processor that carries the full TCP-IP stack leaving room to add your own protocols and customisations.[…]

Node.js is a Javascript application server based on Google V8 Javascript Engine. Node.js has a very good package manager these days, with a bunch of libraries on it. So it is the new buzz.

At Gioorgi.com we was never a SQL fan. In 2000 we thinked SQL was boring, mostly because sql algebra could be a bit boring. Then we found this book written by one of the father of SQL. Years ago Google and then Facebook popped out with new incredible ideas, for improved and super fast scalability, which eventually turned to the “NoSQL” mantra.

But NoSQL is a mature technology, or it is only a path traced by the Social company out of there? Let’s explore together…

Abbiamo già introdotto alcune tecnologie accessorie intorno al C++ e ad Arduino. Tra le evoluzioni più interessanti di cui vogliamo parlare oggi, c’è ne sono alcune che potremo sfruttare per Arduino, ed altre che sono meri spunti di riflessione. Andiamo ad iniziare!

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L’Arduino Uno, è un micro controller tutto italiano, sviluppato in open source e che sta avendo un grande successo.

Una parte del suo successo è dovuto al fatto che costa meno di trenta euro, e per essere così economico la versione base ha un chip ATmega328 con soltanto 2 KB di RAM, 1KB di EEPROM e 32KB di memoria flash per il codice. Come implementare comportamenti complessi con risorse così scarse? L’ingegneria del software ci può aiutare?… Vediamolo assieme, in una serie di articoli che avranno come obiettivo l’ingegnerizzazione spinta del sistema di sviluppo Arduino.

Sometimes, a client-based refresh of the session is the only viable option.

Anyway, we must define this a “bad idea”, because you can end up stuffing even more problems on your architecture…

Now this is something that may or may not be useful to a lot of people, depending on you situation, you may want the user to elect to refresh their Session or not (like banks usually do); but this is for applications that may have a lot of idle time and users are annoyed with their Sessions dying... considering most users don't know what a Session is, but they know that the application stops working correctly.

It uses jQuery and is incredibly simple, just a few lines of code, and no screen flicker or any annoyance to the user at all; ignorance is bliss. First I include the following in the code-behind in any page you need to keep refreshed (works on masterpages as well)[…]