Yours, Etc.: Origins and Uses of 8 Sign-Offs
method of typesetting in which characters are generated by computer and transferred to light-sensitive paper or film by means of either pulses from a laser beam or moving rays of light from a stroboscopic source or a cathode-ray tube (CRT). The system includes a keyboard that produces magnetic tape-or, formerly, punched paper-for input, a computer for making hyphenation and other end-of-line and page-makeup decisions, and a typesetting unit for output. The keyboard may be a counting keyboard, which allows the operator to decide placement and spacing and is suitable for tables, formulas, and equations, or a noncounting keyboard, which is faster and cheaper to operate and suitable for solid text.