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Archive for May, 2010

Customize Your Own Xbox 360

Friday, May 14th, 2010

The XBox 360 is the futuristic way of playing your games, music and movies and encourages competition that works your fingers to the bone. There is a list of prior Xbox games that the new xBox 360 can play for you that is backward compatible.

XBox 360 – the attractions

Controllers, DVD playback kits, adapters, cables, wireless gear and whole load of amazing accessories are part of the magic of Xbox 360. These features are meant for total comfort, very minute accuracy and complete control with favorite movies that can be replayed, adapters and cables to set your Xbox for paying and wireless connectors to get your game online.

XBox 360 – Hardware

The XBox 360 has twenty GB HD along with a wireless control support, wired headset and much more such as the Halo 3 Accessories and the compatibility with Windows Media Center

XBox 360 – The Consoles

The consoles of the XBox 360 and they are the Core Console and the Elite Console. The Core Console comes with the basics such as plugging in the console, grabbing the controls and playing where extra components can be added at one’s own speed. The Elite Console has a large hard drive, a control system that is black and without wires, a headset that is wired and a complete superior black finish.

XBox 360 Accessories

The XBox 360 accessories are indeed mind-blowing because the extras accessorize the complete experience of the XBox 360, taking it to unimaginable heights. Here are some of the accessories:

The Halo 3 Wireless control support system for XBox 360 is one of the accessories
The Xbox 360 Halo 3 Wireless Headset is another accessory
The Xbox 360 wireless black control accessory
The Xbox 360 racing wheel without wires for adventurous sports
The user’s manual of Xbox 360 is an important accessory for handling the dynamic unit
Xbox 360 hard dive DVD playing media is another accessory
The Xbox 360 playing and charging kit and rechargeable battery kit
The universal media remote is also another of Xbox 360 accessory
The wireless game receptor for Windows is an Xbox 360 accessory
The XBox Live vision is part of the Xbox 360 accessories
The windows media center for extending kit from Xbox 360 accessories

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A Refresher in Serial Data Communication Basics

Wednesday, May 5th, 2010

Serial data communication is in many respects similar to COBOL programming. There was a time when the COBOL computer language ruled the business programming world just as there was a time when most data communication used serial connections and the RS232, RS422 or RS485 protocols. But just like newer programming languages did not completely replace COBOL and there are still hundreds of millions of lines of mission-critical COBOL code in use all over the world, USB and other high-speed data communications protocols did not simply replace RS232-style serial communication

So for old time’s sake and to keep from getting rusty, let’s revisit what all is involved in designing or analyzing a simple serial cable that takes advantage of all the various aspects of the RS-232 standard (or RS-422 or RS-485).

First, there’s speed, and here there are two aspects. One is that the speed of the sending and receiving devices must match. Buffering and flow control may come into play here. The other is maximum transmission speeds and how they relate to maximum cable length.

Second, there’s flow control. This comes into play when one of the devices is much slower or may occasionally want to stop receiving. Flow control can be either via software (by using XON/XOFF or ETX/ACL signals) or via hardware by using one of the RS232 pins.

Third, there are parity (a simple way of error control), stop bits (enclosing characters with start and stop bits), and character length (there are different codes, and they may or may not include parity bits).

Fourth, serial communication can be in full-duplex, half-duplex or just simplex. The chosen mode can influence which connector pins are being used. Note that there is also “echoplexing,” which is echoing characters back to the sender. Setting this wrong may result in no characters displayed or them being displayed twice.

Fifth, make sure line feeds are set properly so that text is properly formatted. This remains a big issue to this day, with different computers and operating systems handling line feeds in a different way.

Sixth, differentiate between synchronous and asynchronous data transmission. Synchronous uses a clock whereas asynchronous uses start and stop bits. Sometimes there is a combination of the two. What’s important is that both ends are set the same way.

Finally, there’s polarity. This refers to signals being either positive or negative. For example, hardware flow control may expect a positive signal on a pin, and it won’t work if the signal is negative.