This site is dedicated to sales of an educational 8-bit computer kit which uses the Z80 for its central processing unit (CPU). This microcomputer kit is based on the wire-wrap hobbyist system I describe in my main web site, which in turn is based on designs made popular by Steve Ciarcia in his book Build Your Own Z80 Computer, Byte Books, 1981. I created this kit in response to requests by site visitors for an easier way to build a Z80-based computer. The best way to get familiar with the kit for sale here is to download and read the kit instructions. If you still have questions, please email me.  --Best wishes, Donn Stewart.

How to order.

To order, send me an email telling me what you are interested in. There are many variations in what you might want to buy, and I can help you think about which kits you need.

Once you have decided what you want to buy, let me know, and I will create a PayPal invoice for you. You will get an email from PayPal, with a link to the invoice. You can pay with a credit card, or by direct transfer if you already have a PayPal account. Once I receive confirmation of your payment I will ship your items in one or two business days.

I am selling and shipping worldwide. If you live in Virginia, I have to collect sales tax from you. If you live outside the USA, you will probably have to pay customs duties and value-added taxes. You are responsible for these charges. I always ship as merchandise, not as gift or commercial sample.


Domestic (USA) shipping of the larger items is by US Postal Service Priority Mail flat-rate box. The charge for shipping is $6.45, plus a $2.00 handling fee. Smaller items, like bare boards or the EPROM, can be shipped First Class mail. The cost depends on the weight, usually no more than a few dollars. First Class mail merchandise can be insured, but it requires registering the item, and this costs more than the Priority Mail box, so if you are anxious about using First Class mail, you should request Priority Mail.

International shipping of the larger items is by Priority Mail International flat-rate box or by International First Class mail. The cost varies depending on the destination and the weight. Let me know what country you live in and I will figure out the charge. Priority Mail is between $24.95 and $33.95. I charge a $3.00 handling fee for international shipments.