Abstract: A terminal having a keyboard with keys variable in arrangement, and a method for varying the key arrangement are disclosed. The terminal includes a keyboard having a plurality of keys movable in their position, like a puzzle, in a keyboard frame, with at least one of the plurality of keys being detachable from the keyboard frame, a memory for storing a mapping table for mapping code values respectively corresponding to the plurality of keys in the keyboard, and a re-mapping table for re-mapping code values respectively corresponding to the plurality of keys rearranged in the keyboard is provided. A controller recognizes the keys with reference to the mapping table, forms the re-mapping table according to information of key rearrangement when the information of key rearrangement is input, and recognize the keys with reference to the re-mapping table after the re-mapping table is formed.