| http://www.w3.org/ns/prov#value | - The arrangement of FIG. 3a could be employed in battery powered systems such as portable computers where the devices 301, 302, . . . 310 would be items such as disk drives, keyboards, screens, CPUs, modems, and so forth with controller software controlled and interrupt driven to turn off all items not in use but quickly turn on items upon demand for use.
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