Here we have a biggole two-page IBM PC 5150 advertisement spread from 1982 — published not long after the launch of IBM's first PC in August 1981.
It looks like IBM is trying to play up the bare-metal technical angle for Byte readers, who likely were building their own PCs from kit parts just a few years prior (and some still were doing it then).
The result, quite frankly, is a huge mess (looks like my workbench). And the advertisement didn't come out too well in the magazine print run, which makes the image dark and muddy. It's not my fault, I swear!
I particularly like the phrase "the RS232C interface that gives you the world" in the advertising copy. It implies using the serial port for networking — that is, in connecting to remote computers. It's funny because back then, that statement was a hyperbolic boast that was not meant literally. Online services were limited to a teeny-tiny fraction of the world population and their capabilities were limited. Today, networking does really give you the world.
Discussion Topic: Have you ever broken a computer while you were taking it apart? Tell us about it.