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A comment on Are “reversible” computers more energy efficient, faster? (2004). Parent comment

Re:Are “reversible” computers more energy efficient, faster?... by im3w1l on Saturday July 25, 2020 @07:51PM (#23953270)
No because it takes two inputs and gives two outputs. One input is passed through unchanged, and the other output is indeed xor.
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Re:Are “reversible” computers more energy efficient, faster?... by saagarjha on Saturday July 25, 2020 @10:03PM (#23953844)
And hence it is reversible, since you can get the inputs back from that output!
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Re:Are “reversible” computers more energy efficient, faster?... by sukilot on Saturday July 25, 2020 @11:24PM (#23954186)
In normal human arithmetic, it's equivalent to saying something like "7+5= 12" and remembering the "+5" so you can undo it later.
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