Computer Magic
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Archive for December, 2009

Intro to Relational Databases

Monday, December 28th, 2009

A database is just a series of one or more tables. Each table is a separate and distinct entity. What makes a database “relational” is the ability to define relationships between one table and another. In some db systems (mssql), you can actually tell the system that there is a relationship. In others (mysql) you […]

Crystalfontz LCD – 635 on FreeBSD and OpenSolaris

Wednesday, December 16th, 2009

I have recently gotten a hold of a CFA 635 LCD + Keypad device. Very slick. I was doing some work with it and wanted to use a unix OS to drive the device for some custom work. I ran into a couple minor things when getting the device setup. 1) It works great in […]

When free isn’t free – enforcement of the GPL just because

Tuesday, December 15th, 2009

All I can say is wow. I read this article today and I am unfortunately not surprised. This is a perfect example of why many developers shy away from the GPL license when distributing their open source code. First, I want to say I am a big fan of Open Source. I have used […]

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