XenoSoft skrev:
>> > What's the deal?
>>
>> Well..... it *does* come in usful when identifying which socket is
>> keyboard, and which is mouse (bearing in mind their similarity - i.e. they
>> look identical).
>... and for those without PC experience. We had a newbie in one of the
>college labs who was trying to install a second printer on some of the
>OLD (8088, 80286) machines. But the "other" DB25 connector on the back of
>the machines was MALE, ... So she connected them with gender changers.
>[for non-PC people: IBM used FEMALE DB25 for parallel printer, and MALE
>DB25 for serial]
IBM were one of those bastards who introduced the non-DB25 serial ports. Which
is a real bother since there is no real D9 serial standard pinout. IBM use
one, Apple used one, HP another and Luxor a fourth.
This reminds me of a post a month or two ago on the PS/2 group, where a nebiw
was stating that there were no serial ports on the back of his model 95, only
a parallel port and an inverted parallel port.
Well, at least that would be somewhat true WRT the Amiga 1000, which had
switched genders on its parallel and serial ports.
>Back a long time ago, one of our instructors damaged the input circuitry
>of of several giant classroom CGA compatible monitors by plugging them
>into the Microsoft Bus [green-eyed] Mouse ports
How would you plug a CGA monitor (D9) into a bus mouse port (mini-DIN)?
>> The colour coding will be essential when the PC world finally wakes up and
>> uses fibre optics for everything...
>Is the color coding standardized? Or will we have incorrect connections
>made by people who follow the color code instead of other cues?
I can just imagine how people with no clue (or analphabets, more likely) would
plug modems into Amiga joystick ports and VGA monitors into the Atari STE
advanced joystick ports, thinking "cor, dual-head!". =/
But seriously, most connectors have been used more than once in the history of
computing, so proper labeling is no bad idea.
Some D-sub connectors you wouldn't want to plug ito the wrong connector would
be the Dragon 32 PSU (D9), Luxor monitors with power and signal on the same
D15, and similar Ericsson monitors with a DB25.
--
En ligne avec Thor 2.6a.
There are two major products that come from Berkeley: LSD and UNIX.
We don't believe this to be a coincidence.
-- Jeremy S. Anderson
Received on Mon Aug 27 2001 - 10:18:37 BST