Atari 1200 XL. WITH the cassette tape drive and joystick, thank you. All the programs were on essentially game cartridges, and the tape drive was to save very rudimentary word processing and spreadsheet pages. It was the computer equivalent of the human appendix. Useless. Graduated to the XT clone after that. That’s about the time I went full Victor Frankenstein and started splicing mismatched body parts together to make my First Creation. Once I went uptown and got a real 486, I set The Monster up in my late dad’s den for he and Mom to use. I still have an ancient e-mail from him saved in my old Yahoo account somewhere. Dated about 1998, I think. He passed away the following year, but he at least got his first hands-on with this little thing called computers and the Internet. He could tie up the phone line with that thing. It was like the Encyclopedia Britannica and The National Archives had arrived at his door, gift wrapped.
My first was a Motorola 6800 development kit that I had to solder together and supply my own tape recorder and power supply. Hexadecimal display and keypad and 256 BYTES of RAM.