As defined by the Uniform Commercial Code, article 3 – 104: “(1) Any writing to be a negotiable instrument within this article must (A) Be signed by the maker or drawer; and (B) Contain an unconditional promise or order to pay a sum certain in money and no other promise, order, obligation or power given by the maker or drawer except as authorized by this article; and (C) Be payable on demand or at a definite time; and (D) Be payable to order or to bearer”. Instruments which may be negotiable are: a draft (bill of exchange); a check: a certificate of deposit; a note.