serial console

["mick.crane" <mick.crane@gmail.com>]

I've never really known what a serial console is.
Say in relation to a Raspberry Pi or Arduino
I assumed a serial console was a device with a screen and keyboard.
When people talk about a serial console they are talking about 
connecting a Debian PC to a device with a parallel, wired cable to a 
parallel port or an adaptor on a PC and emulating this console thing 
with software?
Like a telnet connection?
mick