A review of the state of machine translation considers the historical development of the process, how it works, and results of users' evaluations. Machine translation is the process of translating one language into another through the use of the computer, following the linguistic and computational instructions supplied to it by human researchers in linguistics and programming. The texts to be translated have to be presented to the computer in machine-readable form. Only machine translation that does not involve human editing is considered. The machine translation process that is discussed is unidirectional between a pair of languages: the translation is possible only from Russian to English, for example, and not vice versa, in one system. One of the difficulties that machine translation is faced with is the ability of adjustment to context, but an advantage of machine translation is the speed. An evaluation was conducted by users of the Georgetown system in which translations were unedited translations of Russian texts into English. A second study reviewed evaluations by users of translations made with the FR-II system, involving translations of texts in mathematics, from French into Russian. Organizations that produce machine translations and details of their services and centers conducting research in machine translation are discussed. (SW)