This volume reports on the initial phase of a technology assessment of personal computers. First, technological developments that will influence the rate of diffusion of personal computer technology among the general populace are examined. Then the probable market for personal computers is estimated and analyzed on a functional basis, segregating it into four submarkets: the home, education, small business, and large organizations. Next, some possible evolutionary forms of the personal computer are briefly described along with an alternative mode of development of personal computing. In conducting this phase of the assessment, the researchers utilized a survey of existing personal computer users and market growth models for large ticket consumer durable goods to predict the probable growth and maturation patterns of the personal computer market. Tables of data are included as well as an extensive bibliography. (Author/LLS)