|Product Name||Military History: The Definitive Visual Guide to the Objects of Warfare|
|Category||Book / Magazine / Publication|
|Amazon.com||Buy on Amazon ~ 0756698383|
|Price New||20.00 US Dollars (curriencies)|
|Price Used||11.78 US Dollars (curriencies)|
|Width||1.31 inches (convert)|
|Height||12.13 inches (convert)|
|Length||10.19 inches (convert)|
|Weight||92 ounces (convert)|
|Long Description||From the siege towers and catapults employed by ancient invaders to the unmanned drones and stealth bombers used by today's armed forces, the mastering of superior technology has always played a critical role in determining an army's chances of success — or defeat. Following in the footsteps of DK's esteemed military history titles Military History is the definitive guide to the development of battlefield technology through the ages, from Bronze Age Mesopotamia to the War on Terror. Organized chronologically and by key military technology, Military History: The Definitive Visual Guide to the Objects of Warfare covers the iconic weapons, armor, equipment, and battles that have defined war through the ages, showing the impact of changes in military technology on the very fabric of history.|
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Article of interest
Identified by the bulls-eye pattern in the center of the square, the Aztec Code barcode is easy to recognize. This symbol supports patterns ranging from 15x15 up to 151x151 blocks with one special rune that can encode a single byte. This rune is 11x11 blocks.
The bulls-eye is either 9x9 or 13x13. The ring directly beyond the bulls-eye is the mode section. The remainder of the symbol is the data and error correction. Three of the corners of the core hold the orientation markers. In the image below we have marked the bulls-eye in red, the mode section in green and the orientation markers are in blue leaving the data area in black and white.
The data is stored in pairs of rings that stretch out from the core. The decoding of data starts at the orientation marker made up of three blocks and procedes in a counter-clockwise direction. There is no outer marker to identify the outer boundry because the size is encoded in the core.
Because this symbology is mainly used in industry and not for public consumption, most smart phones can't read them. Try with your smart phone.
Although we don't have a generator here on our site at the moment, there is one availbale at www.racoindustries.com if you wish to create your own Aztec Code barcodes.