5: Choosing the Right RAM . . . . . . . . . . . . . . . . . . . . 71 in .NET

Encoder QR Code JIS X 0510 in .NET 5: Choosing the Right RAM . . . . . . . . . . . . . . . . . . . . 71

nel (# of groups)

40 -1

including a unique serial number. This number is encoded by the manufacturer and uniquely identi es up to 264 = 18,446,744,073,709,551,616 tagged items. RFIDs are available as passive and/or active radio read/write sensor packages with active read (and often write) capabilities in relatively large areas (like a large distribution center warehouse or a containership), all performed automatically, supervised by computers, and communicated in a wireless fashion. The attraction to an assembly factory or a supply chain manager here is that when the RFID network is integrated with the factories material resource IT management systems, accurate information can be obtained on all tagged parts at close to real time, all throughout the entire supply chain. This can include the globally distributed factories as well as information about parts and assemblies in shipment/in transit. This is why RFID represents excellent research, technology, as well as big business opportunities. To illustrate this, consider research challenges such as remotely scanning and tracing products and parts in boxes on a cargo ship as it approaches national waters from international waters; tracing parts that are subject to corrosion and being used in agricultural or military equipment; medical drugs that are being counterfeited and repackaged and then shipped and imported illegally; or laptop computers that are dropped and damaged by accident. As a clear sign of the business opportunity, consider that according to a U.S. Department of Defense published presentation, RFID-enabled supply chain savings reached over U.S. $460 million in 2004 and the projections for 2010 are in excess of $4 billion!

Unfortunately that constraint is hidden from the programmers building the user interface. These checks may also not be in a form that s easy for the program to understand. Most programmers don t know how to open Access, read a eld s check constraints, and parse an expression such as this one to gure out what it does.

<xsql:action handler= SomeActionHandler > <firstChoice test= {@test1} >{@valParam1}</oneChoice> <secondChoice test= {@test2} >{@valParam2}</secondChoice> <thirdChoice test= {@test3} >{@valParam3}</thirdChoice> <otherwise>{@valParam4}</otherwise> </xsql:action>

Using the printf() function, write a single line of code that takes a month (from 1 to 12), a day (from 1 to 31), and a four-digit year, and displays the resulting date, formatted in mm/dd/yyyy format. Don t forget to add a zero in front of the month or day if it s less than 10. Write a script that emulates the function call str_pad( $myString, $desiredLength). In other words, take a string, and add space characters to the right of it until the string reaches the desired length. Display both the original and padded string in the page.

(11.18)

The answers to this question vary, depending on what s running on your system. But it s easy to check where memory is allocated at any given moment, so we can tell you where a lot of it is likely to be tied up or in use. If you get to know the Windows Task Manager, you can even check on memory allocation and usage any time you like (more on this later). Judicious use of this tool, however, shows that the biggest memory consumers on MCE installations include the following: