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  • Blog Post: Microsoft Technology Roadmap in Fortaleza, Brazil

    It's becoming a habit. Every time I take a vacation in Brazil (more specifically in the city of Fortaleza, where I spent most of my life), the nice folks from Evolucao Informatica ( http://www.evolucao.com.br ) there invite me to deliver a presentation. This time I chose to talk about the Microsoft Technology...
  • Blog Post: TI-55-II calculator, the first device I ever programmed

    I recently bought a used TI-55-II on eBay. This is an old (early 80’s) Texas Instruments calculator, one the first programmable ones. I got it mostly for sentimental value, since I used to own one back in Brazil in 1983, my last year in high school. Looking back, the fact that I got this specific...
  • Blog Post: The good old days of CP/M 2.2 on a TRS-80 with an 8-bit Z80 CPU

    I was reading the news on the release of Windows 7 and stopped to think of the early days of my IT career and what an OS looked like then. I thought way back to one of the first microcomputer disk operating systems I ever used: CP/M. I actually remembered the few resident commands we had back then in...