http://en.wikipedia.org/wiki/Apple_Silentype

ya know what?

Those guys that worked for apple were amazing. At the time they were making things happen that were completely custom/ that required out-of-the-box thinking, for apple.

Apple was very lucky to have these Guy's.

It is mechanically identical to Trendcom's Model 200, except for the Apple logo in the lower left corner of the front cover,[3] but the internal digital board was completely redesigned by Apple, removing the relatively expensive microprocessor and memory chips, relying on software in the Apple II instead

Click to expand...

Obviously the Apple II was powerful enough at the time to run this printer with software, witch i am assuming the Trendcom's Model 200 version of this was serial/standalone.

Ah "software" controlled, Reminds me of the wonderful days of the LTWINMODEM :-D and ISP Technical Support :-D