July 2001
Intermediate to advanced
656 pages
15h 51m
English
book
Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
by Craig Larman
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33.5. Accessing External Physical Devices with Adapters; Buy vs. Build
Another requirement in this iteration is to interact with physical devices that comprise a POS terminal, such as opening a cash drawer, dispensing change from the coin dispenser, and capturing a signature from the digital signature device.
The NextGen POS must work with a variety of POS equipment, including that sold by IBM, Epson, NCR, Fujitsu, and so forth.
Fortunately, the software architect has done some investigation, and has discovered that there is now an industry standard, UnifiedPOS (www.nrf-arts.org), that defines standard object-oriented interfaces (in the UML sense) for all common POS devices. Furthermore, there is the JavaPOS (www.javapos.com)—a Java mapping of ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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