FIGURE 13 Histogram showing the distribution of 35 data-acquisition systems in total cost.

A breakdown of total costs for the 35 systems is given in Table 9, showing separately the total amounts involved in each of the four categories defined above. Evidently, about 60 percent of the cost goes for standard computer hardware, while about 40 percent goes for special hardware and software required for data acquisition. Table 10 shows separately the hardware and labor costs in the DAS item. Evidently, hardware is twice as expensive as labor in this case, on the average.

TABLE 9  Summary from 35 "Complete" Reports
SubsystemCostPercentage
of Total
CPU's with memory and TTY$ 3,933,000 38.5
Standard peripherals2,293,000 22.4
Data-acquisition subsystem3,038,000 30.0
Systems software931,0009.1
TOTAL$10,195,000100.0
TABLE 10  Data-Acquisition Subsystem
Hardware$2,022,000
Labor1,016,000
TOTAL$3,038,000

FIGURE 14 Cost of standard peripheral equipment plotted against central processor costs for 36 systems.