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What Windows Does
Windowslike every operating system, Microsoft or otherwiseis software that controls:The user interface. Windows manages the appearance, behavior, and interaction of the windows, buttons, icons, folders, menus, and other visual elements on your computer screen, either directly or indirectly through another program.Storage. Windows' file system allo- cates space for and gives access to filesprograms and documentsstored on disk or in memory.Other software. Windows is a launching platform for programs. When you run Microsoft Word, Adobe Photoshop, The Sims, or any other Windows program, it relies on the services and building blocks that Windows provides for basic operations such as drawing a user interface, saving files, and sharing hardware.Peripheral devices. Windows controls peripheral hardware such as your mouse, keyboard, monitor, printer, drives, digital camera, and MP3 player.Networks and security. Windows controls the interaction of a group of computers and peripheral devices connected by a communications link such as Ethernet or Wi-Fi. Windows also protects your system and data from harm or loss.System resources. Windows handles the allocation and use of your computer's low-level hardware resources such as memory (RAM) and central processing unit (CPU) time.Task scheduling. Windows acts like a traffic cop, setting priorities and allocating time slices to the processes running on your PC.Shareware
Many of the third-party programs that I recommend in this book are shareware. Shareware is software that you download from the internet without paying for ahead of time (as you do for proprietary or shrink-wrapped software). After a free tryout period, usually 30 days, you're expected to pay for the program if you keep using it. You can copy shareware and pass it along to others, but they too are expected to pay a fee if they use the product. Sometimes, paying the fee gets you a key code that unlocks expanded features or turns off nag messages.Shareware is inexpensive because usually only one programmer writes it and offers it directly to customers, bypassing middleman markups and packaging expenses. Some programs are free. If a popular free programparticularly a file-sharing programisn't labeled "public domain" or "open source" (Securing Your Computer" in Chapter 12.I give the shareware programs' home web sites, but you also can download them from
