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How I got to here

Mark Nesselhaus wrote 12/21/2016 at 02:51 • 2 min read • Like

Received my ham radio call in 1974 while in high school in Hialeah Florida. A friend got interested in computers so our group helped him build his Imsai 8080. What fun coding our first programs and playing catch the rabbit on the led display. My first of many computers was the TRS-80. Years later I started building my own ham radio equipment as new stuff just cost way too much. Last winter I got interested in relay computers but figured the cost of such was also too high for me but a friend of the family had passed away and left me with all of his electronic parts that included several hundred transistors and diodes. A web site by Simmon Inns got me pondering about trying to build a computer processor after I had finished building his 4-bit full adder with transistors. So now I have some but not all of the sections needed for such a build and currently working on a Mux and Dmux circuit. With these I SHOULD be able to start connecting the parts and see if they will play nice. I am having a real blast learning this logic stuff even if I have waited till I hit the 60 years old mark. I need to say that I have come across a lot of information about logic gates and cpu's. Most I could follow and some information that I could not get my head around with my self taught electronics education. All in all, this is fun. One other point is that when my wife complains that I am spending too much time on this project I just have to remind her that I could be going to the exotic dance clubs in Myrtle Beach. That stops her in her tracks real fast. Then she just says I love you and walks away.

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Yann Guidon / YGDES wrote 12/21/2016 at 03:10 point

Or worse, instead : you could be reading this http://6502.org/users/dieter/

or ordering more cheap/bulk parts on eBay... I found a German seller that asks for $20 to ship 1K silicon NPN or PNP :-P

Please keep me informed of your Mux/DeMux circuits, my drawings at https://hackaday.io/project/13409/log/50243-register-set-musings still need to be tested...

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Mark Nesselhaus wrote 12/21/2016 at 09:45 point

Yep, that might be worse....and I've not used Ebay for many years. Still trying to figure how and where to post things on Hackaday. I am challenged at this but will get some circuits up asap.

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Yann Guidon / YGDES wrote 12/21/2016 at 13:41 point

I'm sure you'll beat this challenge easily :-)

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