J.S. WalkerJ Walker is a development engineer with over 35 years experience in designing computer systems and has also worked extensively on the repair and restoration of many vintage computer systems. He worked as R&D manager in a large biomedical systems cororation for 18 years before starting and running his own very successful technology development companies for 20 years. Despite spending decades working to develop cutting edge technologies his main interest is still rooted in vintage engineering technologies and the basics of engineering technologies. Read More Read Less