1. A typewriter having a function of automatically indicating a candidate correct word for a mispelled word, comprising: a keyboard having a multiplicity of keys; an input data memory for storing input data constituting words entered through said keyboard; a printing mechanism operable for printing characters corresponding to said input data entered through said keyboard; a display device operable for displaying said characters in only one line; and a control device connected to said keyboard, said input data memory, said printing mechanism and said display device, for controlling said input data memory, said printing mechanism and said display device, to store, print and display said input data entered through said keyboard; said control device including a dictionary memory for storing data of a multiplicity of words, and spell-checking and correct-word indicating means for sequentially comparing each of the words of said input data with said multiplicity of words stored in said dictionary memory, to check said input data for any misspelled wrong words, and if a wrong word is found in said input data, searching for at least one candidate correct word to be substituted for said found wrong word, from among said words stored in said dictionary memory, displaying said wrong word, and upon locating said candidate correct word displaying said candidate correct word in relation to said found wrong word on said display device, without operator intervention upon location of a candidate correct word.