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Network Switching Methods: Store-and-Forward Versus Cut-Through
By Sean Wilkins
Jul 28, 2015
Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, believes every network engineer should understand the differences between the two major switching methods employed in computer networks. This overview discusses the two methods from their initial deployments to modern usage.
Upgrading and Repairing PCs Tip #16: High-Speed Internet Access: Which Type is Right for You?
By Scott Mueller
Jul 28, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott helps you make sense out of the confusing morass of plans available from cable modem, DSL, fixed wireless Internet, and satellite vendors.
Quick and Efficient PowerShell Script Debugging with Breakpoints
By Adam Bertram
Jul 27, 2015
Writing a perfect PowerShell script on the first try is next to impossible (though it's nice to dream). Debugging is a crucial skill for every developer, and learning easier and faster ways to find script problems can really improve the process. Adam Bertram explains how to use breakpoints to troubleshoot your PowerShell scripts.
Upgrading and Repairing PCs Tip #15: The Best Ways to Clean Your Computer Keyboard
By Scott Mueller
Jul 27, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott offers some tips on keeping your keyboard sparkling and stick-free.
Working with ImageViews and Bitmaps in Android Application Development
By Carmen Delessio, Shane Conder, Lauren Darcey
Jul 27, 2015
In this chapter from Android Application Development in 24 Hours, Sams Teach Yourself, 4th Edition, you'll learn the details of handling images and bitmaps, including creating bitmaps, using drawing commands, and handling very large images.
Play to Learn, Play to Teach: The Value of Play in Learning New Technologies
By Elliott Hauser
Jul 24, 2015
Are you "All work, no play"? You're doing it wrong. Code instructor Elliott Hauser explains the importance of play in both teaching and learning, especially when it comes to technical subjects and skills.
Upgrading and Repairing PCs Tip #14: USB Security Risks
By Scott Mueller
Jul 24, 2015
USB drives have been used to spread many types of malware. In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott offers some precautions you can take to protect your information and devices.
Upgrading and Repairing PCs Tip #13: Troubleshooting PC Audio Problems
By Scott Mueller
Jul 23, 2015
Although Plug and Play (PnP) PCI and PCIe sound cards and integrated audio have eliminated the troublesome hardware resource conflicts that once made adding audio to a PC a big headache, there are still many possible sources of frustration with recording or playback. In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott helps you troubleshoot your audio hardware.
Using the New Null Conditional Operator in C# 6
By Bill Wagner
Jul 23, 2015
Bill Wagner, author of Effective C#: 50 Specific Ways to Improve Your C#, Second Edition, shows how to use the new null conditional operator in C# 6 to reduce code size, decrease bug counts, and make code more readable.
Programming Neo4j with Java
By Steven Haines
Jul 22, 2015
In the second article of a three-part series, Steven Haines discusses two ways of using Java to program for Neo4j: via the Core Java API, and via the Traversal API.
Upgrading and Repairing PCs Tip #12: How 3D Accelerators Work
By Scott Mueller
Jul 22, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott discusses the evolution and optimization of 3D graphics on your computer.
Using Google Maps, Navigation, and Google Now with Your Android Phone
By Craig James Johnston
Jul 22, 2015
In this chapter from My Android Phone, learn how to use Google Maps, Navigation, and Google Now, including staying up to date with Google Now, navigating with Google Maps, and taking map data offline.
Apple Watch Interface Navigation
By Wei-Meng Lee
Jul 21, 2015
In this chapter from Learning WatchKit Programming: A Hands-On Guide to Creating Apple Watch Applications, learn how your Apple Watch application navigates between multiple screens.
Upgrading and Repairing PCs Tip #11: Why Won't My CD or DVD Play? Troubleshooting Optical Drives
By Scott Mueller
Jul 21, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott offers tips for troubleshooting a CD or DVD that won't play.
Sharing Data in Apple Watch Applications
By Wei-Meng Lee
Jul 20, 2015
Your custom Apple Watch apps and iOS need to share data back and forth constantly. You could create the same code at both ends of the interaction, but why make extra work for yourself? Wei-Meng Lee, author of Learning WatchKit Programming: A Hands-On Guide to Creating Apple Watch Applications, advises sharing code, not just data.
Upgrading and Repairing PCs Tip #10: Comparing Flash Memory Devices: Which Is Best for Your Needs?
By Scott Mueller
Jul 20, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott gives you a list of issues to check before purchasing flash memory-based devices.
Making and Receiving Calls on Your Samsung Galaxy S6
By Craig James Johnston, Eric Butow
Jul 17, 2015
In this chapter from My Samsung Galaxy S6, find out how to make and receive phone calls (including conference calls) using your Galaxy S6.
Upgrading and Repairing PCs Tip #9: What Is a Hard Disk Drive and What Does It Do?
By Scott Mueller
Jul 17, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott discusses the hard disk drive (HDD), one of the most important and yet mysterious parts of a computer system.
Package Management in Windows PowerShell v5: Install and Manage Software from the Command Line
By Timothy L. Warner
Jul 16, 2015
Package management in Linux is great: Scroll through a repository, grab the specialized modules you like, and slide those packages seamlessly into the OS. Shouldn't Windows do that, too? Yep, and soon it will. Timothy Warner, author of Sams Teach Yourself Windows PowerShell 5 in 24 Hours, previews package management with the upcoming Windows PowerShell v5 release.
Upgrading and Repairing PCs Tip #8: How Magnetic Fields are Used to Store Data on Your Computer
By Scott Mueller
Jul 16, 2015
In this excerpt from the 22nd edition of Scott Mueller's Upgrading and Repairing PCs, Scott explains how magnetic fields are used to store data on your computer.

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