Ask The Oracle

...A Tech blog for Engineers, Software Devs, and Computer Geeks

April, 2010

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Why you should Avoid Checksums and Use CRCs Instead

Tuesday, April 20th, 2010

Error detection is an important consideration for the designers of embedded systems. When the computer in your spacecraft sends a message to the main engine to shut off, it is important to make sure the message is received correctly. You want to make sure it can tell the difference between commands to, turn on, turn off, and self destruct. You might choose to use a “standard CRC algorithm” to guarantee the integrity of your data transmission. However, you might be surprised to find out how many “standard algorithms” there are. Here is some information to help you choose your implementation wisely.

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How to Add Graphics in Doxygen PDF files

Thursday, April 15th, 2010

In a previous post, “Document Your Software the Easy Way with Doxygen”, I discussed how to use Doxygen to create documentation for you software project.  This post shows you how to add graphics to the PDFs generated by Doxygen.

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Use Google Voice to Update Your ToDo List

Tuesday, April 13th, 2010

Have you ever noticed that your best ideas come when you have left the office, are driving your car, or are walking the dog?  Maybe you just remembered that you need to send flowers for your Mom’s birthday. Don’t lose those inspirational ideas and ToDo items.

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Document Your Software the Easy Way with Doxygen

Monday, April 12th, 2010

Many software developers like writing code but hate writing documentation for it. There is a free program called Doxygen that can generate the documentation for you and safe you time and heartache.

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Free Windows Graphical App combines ipconfig, route, netstart commands

Friday, April 9th, 2010

IpConfig, ipconfig, netstat, and traceroute are very useful command line utilities built into Windows. They can be used to debug problems with network adapters, internet connections, DHCP and so on.  Here is a Free tool that gives you the functionality of ipconfig, netstat, traceroute in a graphical format and you don’t have to remember all of those command line switches. Click to continue »

Windows 7 Tip: Elevated Command Prompt Anywhere

Thursday, April 8th, 2010

When running Windows 7, I found that I really missed the Window XP Power Toy, Command Prompt Here. It allows you to open up a command prompt in a specific directory  from Windows Explorer by pointing to the directory and right clicking.  This was very useful when I needed to run a console program or script from a specific directory. Well, I found out that this feature is now built into Windows 7,  along with some extra goodies. Check it out! Click to continue »

Turn your Computer On Via the Internet

Tuesday, April 6th, 2010

There are times when you want to remotely access one of your computers with Remote Desktop or VNC, but the computer is turned off.  There is a feature built into the hardware of many recent computers that allows you turn your computer power on remotely. It as called Wake On Lan (WOL). Setting this up has been tricky until now.  Lifehacker has the best and easiest HowTo for WOL. Click to continue »