A device that generates a code, often as a series of pulses.(noun)
A programmer.(noun)
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Use "coder" in a sentence
"I am looking for a long term coder to work on various projects for oscommerce, creloaded, zencart etc"
"Allen Coding Systems has released the 53LTi thermal transfer coder, which is available from Advanced Labelling Systems (ALS) and will be demonstrated at the PPMA show."
"I've been a 'coder' since forever, and much prefer the power and control possible when you roll your sleeves up and write code."