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The term "keyer" is generally used to refer to an "electronic keyer," which is a device that will generate dots or dashes depending on which of the two input switches is closed. Usually a device called a "paddle" or "bug" is used for input switching (sending). An iambic keyer is simply an electronic keyer that can be operated with a dual paddle.==Disambiguation==An electronic keyer can support the iambic sending technique, in which case it is an "Iambic Keyer." The term Iambic has nothing to do with the paddle. Iambic sending does requires a dual-lever paddle. A bug only has one lever and therefore cannot do iambic sending. You can use an iambic keyer as though it was a bug, but a bug cannot do iambic keying. There is a benefit to iambic keying only if the technique is adopted and the individual is skilled in the practice. Not all operators will master the iambic paddle and therefore any benefit may be impossible to perceive. It is true that fewer movements of the hand are required in order to generate any given piece of Morse code text. Four different CW Key types exist:#Straight Key#Semi-Auto Bug#Electronic Keyer#Iambic Electronic Keyer