There’s not enough information in this volume to give it any real substance.  It is basically a chronological list of the first computers, with dates and names of inventors.  The full-page photos that accompany the text are useful, but the one showing the computer invented in 1975 is sitting on a shelf with a 2001 edition book. And once again we have book including a “timeline” in which the spacing along the line is completely misrepresentative of the time involved.