1. Re: Eu Rebellion (Roughly Boolean)
- Posted by CHARN1407 at AOL.COM
Nov 16, 2002
> |Having a language which behave more like we think (using
> true/false/unknown as boolean type instead of True/False could open up
> for logical programming ... not implemented anywhere)
VHDL (VHSIC Hardware Description Language), used to design microprocessors
and such, has a type std_ulogic designed to deal with electrical signals.
Its logic levels are as follows:
'U' - uninitialized
'X' - forced unknown
'0' - forced 0
'1' - forced 1
'Z' - high impedance
'W' - weak unknown
'L' - weak 0
'H' - weak 1
'-' - don't care
