Holy cow. It is incredible how versatile this little thing is. I wonder if anyone has succeeded building a personal computer out of it, with keyboard and tape.
The KIM-1 (Keyboard Input Monitor) was created by Chuck Peddle at MOS Technology, which later was bought by Commodore, so the MOS Technology KIM-1 became the Commodore KIM-1. (Source: https://en.wikipedia.org/wiki/KIM-1)
Peddle then expanded the KIM-1 into the Commodore PET 2001 with case, monitor, keyboard and tape drive all built in. The 2 KB TIM (Terminal Input Monitor) ROM in the KIM-1 was expanded into the 4 KB KERNAL ROM in the PET. (Source: https://en.wikipedia.org/wiki/Commodore_PET)
Of course, then the PET was upgraded with additional models including the 3032, 4032, 8032, 8096, 8296 and the SuperPET, then the CBM-II series and the Commodore VIC-20, Commodore 64, Commodore 16, Plus/4, Commodore 128 and the unreleased Commodore 65.
Of course. There are many such examples of homebrew kits with tape and TTY; I routinely use a serial port connection as TTY over the 20mA current loop with my briefcase KIM that also has the tape lines brought out to a 1/4" TRS jack, though uploading binaries over the serial link is more handy for testing. The TVT 6 5/8 was an easy to assemble video board, or the cool kids had an MTU 8K RAM expansion that emitted the contents as a 320x200 composite image.
In fact, the AIM-65 was basically a heavily expanded KIM with a LED screen, printer, keyboard and tape all in one box from the factory.