Typewriter having means for automatic detection of misspelled words

Claim 1

A typewriter comprising: a keyboard (10) having a multiplicity of keys including an ignore key (40, 48); an input data memory (120, 122, 124) for storing input data constituting words entered through said keyboard; a control device (72) connected to said keyboard and said input data memory, for controlling said input data memory, to store said input data entered through said keyboard, said control device including a dictionary memory (140) for storing data of a multiplicity of words, and spell-checking means (64, 66, 68) for comparing each of the words of said input data with said multiplicity of words stored in said dictionary memory, to detect any wrong words which are misspelled within said input data; a temporary word dictionary memory (132) which is cleared after said spell-checking means has completed checking of said words of said input data to search for said any wrong words; and temporary-word adding means (64, 144) for storing as a special word each word detected as a wrong word by said spell-checking means, in said temporary-word dictionary memory, upon operation of said ignore key after said spell-checking means has detected a first occurrence of the words, said spell-checking means being operable to search for said any wrong words, by comparing each of said input data against the content of said temporary-word dictionary memory, as well as the content of said dictionary memory, said spell-checking means ignoring the first occurrence of each word constituting a special word and judging subsequent occurrences of each word constituting the special word as a correct word.