Crossword puzzle clue "what lasers need to read"

Here are the possible solutions for what lasers need to read clue

Answer
Clue
Relevancy
cds
Clue
What lasers need to read
They're read by lasers
Lasers play them
argons
Clue
Some lasers used in laser shows
Definition
ARGON, an inert gaseous element
etch
Clue
Draw with lasers, say
Definition
to engrave with acid
inkjets
Clue
Alternative to lasers
Definition
INKJET, a printer that spurts ink to form letters
lightshow
Clue
Lasers at a rock concert, e.g.
sdi
Clue
Prog. that would have destroyed nukes with lasers

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