Unix Type-ahead problem

[Paul Houtz]

I have a question about Unix type-ahead:

   Do all unix systems echo the characters to the screen no matter what
is going on as you type them?  I have only worked on one type.

   The VMS systems I have worked on have type-ahead, and it buffers what 
you type without echoing until it is ready to actually execute the command.

   It's been a while since I used it, but I find the VMS implementation to
be more logical, in that I don't end up with parts of command repeated at 
the prompt.

   On unix, I find myself having to backspace to see which characters DON'T
disappear. 

   Is this implementation dependent?