home *** CD-ROM | disk | FTP | other *** search
/ New Perspectives on Computer Concepts / New Perspectives on Computer Concepts.iso / np2010c / page253.pag < prev    next >
Portable Network Graphic  |  2008-10-02  |  73KB  |  817x1045  |  8-bit (256 colors)
Labels: hakham | keyboard | laptop | monitor | remote
OCR: OPERATING SYSTEMS AND FILE MANAGEMENT 185 What does an operating system cop The most obvious responsibil- ity of your computer's operating system is to provide an environment for running software Your computer's operating system, application software, and device drivers are organized similar to the chain of command in ar FIGURE 4.2 army. You issue command using application software. Application soft- command to print document ware tells the operating system what to op The operating system tells the relayed through various levels device drivers, device drivers tell the hardware, and the hardware actually of software, including the oper- does the work. Figure 4-2 illustrates this chain of command for printing ating system, until it reaches the document or photo printer. The word processing a ...