12 Jul
2005
12 Jul
'05
10:20 p.m.
originally the IBM division that did terminals owned the PC and that
may have had something to do with it. It was later during a squabble
over it's impact on system sales that it finally broke loosed into a separate
division.
It could have had to do with UL approvals as well, though I have no
basis to prove that.
Jim
Tony Duell wrote:
Its my
understanding (but I've only seen it as a rumor, not as hard
technical fact) that the reason the original IBM Monitors plug into the
PC Power Supply and not directly into an outlet is that they were
vulnerable to damage (probably the same horizontal drive problem) if
left powered on independent of the PC.
I've heard that rumour too, but I can't understand why, after looking at
the schematics. The horizontal drive is transformer-coupled, so it
doesn't matter if the input gets stuck high or low, it still won't turn
on the output transsitor.