Dayton Microcomputer Association

DMA is a 501c3 nonprofit, one of the first computer user groups formed in the nation.
Our mission is to promote interest and knowledge in all facets of computer technology.
We are a valuable resource for all things digital.

Out of concern for the health of our membership and guests and in accordance with Ohio restrictions on restaurants, we had canceled many in-person DMA meetings. The DMA Trustees have decided to augment our typical face-to-face meetings with the use of the on-line Zoom product, continuing our meetings as a hybrid. People can gather in person when allowed, and the meeting is also carried on ZOOM. Keep checking this page and also DMA Meetup Events page for updates. If you have questions, comments, or suggestions, feel free to visit our Contact us page and let us know.

DMA General Membership Meeting
 – Hybrid (Online and In-Person)

TJ Chump’s, 7050 Executive Blvd, Huber Heights OH
All DMA meetings are free and open to the public. Anyone is welcome to attend.

Our General Meeting Timeline:

  • 6:00 PM Social Hour for those attending In-Person.
  • 7:00 PM Presentation: The Evolution of PC Technology
  • 8:00 PM Presentation Q&A.
  • 8:15 PM DMA and Technology News.
  • 8:30 PM Ask our ‘Brain Trust’ experts your tech questions.
  • 8:45 PM Door Prize Drawing for Members.

The Evolution of PC Technology
Presented by Gary Coy and Edwin Davidson

Computers have evolved and advanced immensely in the decades since they first became available. They are smaller, faster, and far more powerful than ever before. Each one of us clearly and fondly remembers our first PC. We no longer have to rely on a university or employer to provide access. We now own and use several of these electronic brains on a regular basis.

Specs on the MITS Altair 680 that launched DMA in 1976:
CPU: Motorola / AMS 6800 @ 500kHz
Memory: 1K bytes (1024 bytes) of RAM
OS: None
I/O: Full front panel RS232/current loop serial I/O
Bus: None
Kit form: $293.00 ($345.00 after 12/31/1975)

Gary and Edwin plan to walk us through the major technological advances that have enabled the powerful machines we have today and examine some of the trends we should see in the near future.

Gary Coy is a trustee and current president of DMA. He has worked in the electronic and computer industries for over 20 years, while at the same time running a computer repair business. He has been a member of DMA for over 10 years, serving as an officer, trustee, and frequent presenter. Gary is currently VP of the NASAC computer user group in Xenia, Ohio. He currently works for the Speedway Corporation where he started as a repair technician and now holds the position of customer service claims specialist. Gary serves his community as a volunteer and part-time EMT and offers computer tech support through his company, “Gary’s Computers”.

Edwin Davidson is a trustee and current vice president of DMA. He has been working in and around the media for more than 40 years, including two Academy Award nominated films in 1983. Producing videos, slide shows and writing shows since the 1990s, he can work in front of the cameras or behind the scenes in many capacities. Currently self employed as a producer, Ed’s skills include lighting, photography, and writing.

Our meeting starts at 7:00 pm. DMA members will receive an invite by email for Zoom. Others may request an invite using http://www.dma1.org/contact us/ Or… join us at TJ CHUMPS, 7050 Executive Blvd, Huber Heights OH

Upcoming Meetings

If the meeting is Online, you will need to attend the Meetup Event to get the Online information to attend the meeting. Select the meeting below to visit the Meetup Event to attend that meeting.

Saturday, January 15, 2022
Classic Computer SIG – Phone Support

Thursday, January 20, 2022
Dayton Linux Users Group – Hybrid (Online and In Person)

Friday, January 21, 2022
DDL SIG: Python self-study group – Online!

Tuesday, January 25, 2022
DMA General Membership Meeting – Hybrid (Online and In-Person)

Friday, January 28, 2022
DDL SIG: Python self-study group – Online!

Thursday, February 3, 2022
DMA Genealogy SIG – Online

Friday, February 4, 2022
DDL SIG: Python self-study group – Online!

Saturday, February 5, 2022
Classic Computer SIG – Phone Support

Monday, February 7, 2022
Board of Trustees – (Online)

Tuesday, February 8, 2022
Investment SIG – Online

Wednesday, February 9, 2022
Dynamic Languages SIG

Friday, February 11, 2022
DDL SIG: Python self-study group – Online!

Thursday, February 17, 2022
Dayton Linux Users Group – Hybrid (Online and In Person)

Friday, February 18, 2022
DDL SIG: Python self-study group – Online!

Saturday, February 19, 2022
Classic Computer SIG – Phone Support

Tuesday, February 22, 2022
DMA General Membership Meeting – Hybrid (Online and In-Person)

Friday, February 25, 2022
DDL SIG: Python self-study group – Online!

Visit our graphical calendar or DMA Meetup Events page for all meetings including SIG’s. Visit the SIG’s page for location & map.

Check back later for more detail’s about our next monthly meeting.


Amazon Smile is a feature of the Amazon product which donates 0.5% of the price of your eligible Amazon Smile purchases to nonprofit organizations pre-selected by the Amazon user. Support the DMA at no extra cost to you when you shop at smile.amazon.com. Please remember, only purchases made through smile.amazon.com (not www.amazon.com) will support the nonprofit Dayton Microcomputer Association through the Amazon product. Select here to access DMA Amazon Smile directly.