I grew up with an Odyssey2 with the Voice unit. We found it has "fun" with a number of words. I think the unit did a good job, overall, but there were limitations as with a lot of tech from the late 70s/early 80s.
I'll have to get my Type & Tell cart out and try this out tonight. Should be fun to see my kids' reaction to what was so cool to me at their ages (7 and 4)...