DFSM may refer to:
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Defence Force Service Medal
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The Defence Force Service Medal (DFSM) is an Australian Military award given for long service by permanent members of the Australian Defence Force. It is part of the suite of defence force service awards introduced in 1982, which also ...
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Deterministic finite state machine
In the theory of computation, a branch of theoretical computer science, a deterministic finite automaton (DFA)—also known as Finite-state machine#Acceptors (recognizers), deterministic finite acceptor (DFA), deterministic finite-state machine ...
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Dry-film photoimageable solder mask, a type of solder mask on printed circuit boards
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Irish Defence Forces School of Music
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