Archived posting to the Leica Users Group, 2013/02/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I also started out with CP/M, on a Xerox computer that made use of two 8-inch floppy disks, one for the operating system, and one for the application software and data. Then, the USAF bought Zenith 286 machines, and I got one with two hard drives. I bought my first 286 machine for personal use in March 1988, when Dell was still selling them as PCs Limited. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Frank Filippone" <red735i at verizon.net> To: "'Leica Users Group'" <lug at leica-users.org> Sent: Friday, February 15, 2013 9:39 AM Subject: Re: [Leica] The History of the Personal Computer > The Z-80 processor was used in several early computers, some for PC use, > others for industrial control use. It was, by far, the most common OS for > special purpose industrial control computers. > > If I remember correctly, Radio Shack used an operating system made by > Digital Research..... CP/M, but customized it to their way of thinking. > > The OS was considered much more robust than the Apple or early IBM. > > Digital Research is best known for its refusal to write the OS for the IBM > PC.... > > And the rest is history...... > > As I write this, I am working on an original TRS-80 Desk. Original with > modification: a new top. My then boss wanted to get rid of it, so I > repurposed it....and it is still today more steady than anything I have > ever > tried. It will last another few decades...... > > > > Frank Filippone > Red735i at verizon.net > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >