The ABC language, thirty years later...

Back in March 1986, I was in my second year of college (Data Processing at the Universidade Federal do Ceara in Brazil). I was also teaching programming night classes at a Brazilian technical school. On that year, I created a language called ABC, complete with a little compiler. It compiled the ABC code into pseudo code…

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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…

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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…

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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 Roadmap, a big overview of…

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