Written Chinese
Written Chinese () comprises Chinese characters used to represent the Chinese language. Chinese characters do not constitute an alphabet or a compact syllabary. Rather, the writing system is roughly logosyllabic; that is, a character generally represents one syllable of spoken Chinese and may be a word on its own or a part of a polysyllabic word. The characters themselves are often composed of parts that may represent physical objects, abstract notions, or pronunciation. Literacy requires the memorization of a great many characters: educated Chinese know about 4,000. The large number of Chinese characters has in part led to the adoption of Western alphabets as an auxiliary means of representing Chinese.
Chinese typewriter
Lin had a prototype machine custom built by the Carl E. Krum Company, a small engineering-design consulting firm with an office in New York City. That multilingual typewriter was the size of a conventional office typewriter of the 1940s. It measured 36 × 46 × 23 cm (14" x 18" x 9"). The typefaces fit on a drum. A "magic eye" was mounted in the center of the keyboard which magnifies and allows the typist to review a selected character. Characters are selected by first pressing two keys to choose a desired character which is arranged according to a system Lin devised for his dictionary of the Chinese language. The selected Chinese character appeared in the magic eye for preview, the typist then pressed a "master" key, similar to today's computer function key. The typewriter could create 90,000 distinct characters using either one or two of six character-containing rollers, which in combination has 7000 full characters and 1,400 character radicals or partial characters.