Category Archives: Digital

Everything and anything related to digital electronics

Quadrupedal locomotion

Posted on 2009-05-09 by M. Eric Carr

Okay, this is unexpected. I mean, I like old technology and all, but why would an electronics geek — even a Paleotechnologist — be reading a 127-year-old book on The Horse in Motion (with a study on quadrupedal locomotion?) For … Continue reading →

Posted in Coding, Digital, Robotics, SIGMA Walking Robot | 1 Comment

Highway Robbery

Posted on 2009-01-14 by M. Eric Carr

Sometimes it pays to be a dinosaur. One of the AET students at Drexel sent me an email asking about a serial add-in card for an older CNC milling machine. The manufacturer’s site listed a used one that was available … Continue reading →

Posted in Digital, Nostalgia | Leave a comment

Energy Star — Paleotechnology style!

Posted on 2008-12-15 by M. Eric Carr

A while back, I realized that the Z80 was drawing (relatively speaking) a lot of power. I know modern CPUs can both crunch your numbers and cook your dinner; the Intel Core i7 datasheet specifies a maximum of 145 AMPS … Continue reading →

Posted in Digital, DrACo/Z80, Drexel | Leave a comment

Prime Time

Posted on 2008-12-14 by M. Eric Carr

…and now, for something completely different. (By different, I mean almost useful!) The Z80 computer is now busy computing prime numbers! I wrote a straightforward BASIC program, which I then compiled using Oshonsoft‘s Z80 simulator suite of utilities. The resulting … Continue reading →

Posted in Coding, Digital, DrACo/Z80, Drexel, EET325 | 2 Comments