ABSTRACT
Input devices are those portions of computer, data processing, and information systems that perform the
essential function of providing some means for entering commands and data into the system. Therefore, input
devices are found in all such systems, but are treated here as a separate equipment group, independent of
the total system configuration. However, the place of input devices in a representative computer system may
be clarified by reference to Figure 10.1, which shows the interface of the main input device categories in
relation to the portions of the generalized system that accept the inputs. The categories and the devices listed
in Table 10.1 are the subject of this section.
