Wang 300 Calc

Chuck Guzis cclist at
Mon Sep 10 20:46:01 CDT 2007

On 11 Sep 2007 at 2:02, Liam Proven wrote:

> It is much simpler for everyone concerned /all over the world/ if you
> just match the symbol on the end of the cable with the one on the
> socket on the back of the computer.

Symbols and labels on connectors on consumer devices have always 
smelled like a hack to me.  It would seem that the optimal solution 
is to design the connectors so that it's IMPOSSIBLE to mate them up 
improperly.  Why have a mouse that can plug into the same mini-DIN 
connector into which a keyboard can plug?  Why not devise each 
connector with a uniquely-shaped and sized receptacle and plug (a 
simple receptacle collar and molded cable head would do) so that 
installation becomes a matter of plugging the triangular shaped plug 
into the like-shaped receptacle?  I've never heard of anyone trying 
to plug an RJ-45 network connector into a DB-25 printer socket.

For an extreme example of the wrong-headedness of thoughtless design, 
consider the lowly "wall wart" power supply.  As an exercise, take 
all of the warts from all of the devices in your house and place them 
in a pile in the middle of a room.  Draw the curtains and turn off 
the lights and try to match warts up with devices without toasting 

How the seeing-impaired manage in this world is beyond comprehension. 


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