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III. Analysis of Statistics

A. Comparison of U.S. installed computers with Federal Government

computers by numbers of CPUs.

Figures 5, 6, and 7 show graphically the number of computers installed in the U.S. To further enumerate the size of the Federal installed base as part of the U.S. installed base, the percentage of Federal computers is compared with U.S. computers, using GSA figures and IDC figures. From 1967 to 1975 the total Federal figures have gone from 10% of the U.S. installed base to 4.5%.

It is of interest also to divide the computers into categories, comparing the IDC general-purpose and dedicated-application categories with the GSA general management and special management categories. (The two classification schemes are not synonymous, since one classifies the machine (IDC) and the other (GSA) classifies the function of the machine as specified by the agency.) From 1967 to 1975 the Federal general management computers went from 9% of the U.S. general-purpose computers to 5%, and the special management computers from 18% of the dedicated-application computers to 4%. Thus, the number of Federal computers as a percentage of the U.S. installed computers today is half what it was eight years ago. While the U.S. installed base has better than quintupled in eight years, the Federal base has only slightly more than doubled (see Figure 8).

TOTAL COMPUTERS INSTALLED

(Federal Government Computers? - U.S. Installed Computers2)

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COMPUTERS INSTALLED BY CLASSIFICATION (Federal General Management Computers! General Purpose U.S. Computers?)

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GSA Inventory 1975
EDP Industry Report, April 30, 1976 and April 19, 1974.

Figure 6

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Fiscal Year Sources: 1. GSA Inventory 1975

2. EDP Industry Report April 30, 1976 and April 19, 1974

Figure 7

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