Exactly what computers can do right now in terms of counting, storing information and controlling timed electronic routines is clearly outlined. The elements of the binary system, the variety of innards in the many types of computers and the most practical applications of those presently in use are described. The implications for the future work force of America as advanced computers are adopted to ever more difficult tasks is handled with practical optimism -- yes, it will mean change; no, it need not mean disaster. The career opportunities opened by computer technology itself are competently explored. There is very little introductory material available for the junior high school level on this subject and this book is well organized and brief.