It is well known that the
IBM PCjr was a commercial failure and that the
Tandy 1000 series of computers not only matched the features of the PCjr (other than maybe the wireless keyboard), it also provided more features. Such as better graphics and a sound chip built in.
I don't know off the top of my head how much "better" the Tandy's graphics were over the PCjr, but I don't believe the PCjr had any audio except a speaker for beeps.
So, my question is, was it possible to upgrade the PCjr to the same level of graphics and sound as the Tandy 1000?
I was wrong about the sound abilities of the PCjr. It did have audio built in. But I'm not sure how it compared to Tandy.