An intelligence display arrangement suitable for an "electronic book" uses a smectic liquid crystal display device of the ambiently lit type. The pages of the "book", which are recorded on a relatively large capacity store, are transferred to an immediate access store which holds a small number of such pages. They are then transferred to the display device as needed by, and under the control of the user. Where the "electronic book" is for partially sighted users, it is possible to present a page, part of a page, a line, or part of a line on an enlarged scale.