The TRS-80 Model I with 4 KB and a cassette deck was my first computer. I will always have a love for it. I don't have a real one anymore, but I do maintain this emulator page. A lot of the code was written by Peter Phillips and I thank him so much for it. I attached the virtual keyboard, all the programs, and the ability to store programs.
TRS-80 Emulator with Programs
The IBM-PC was a very important platform for me. I used it for many years before Windows existed.