Windows 7

Every process contains one or more threads, and the Windows thread is the basic executable unit; see the next chapter for a threads introduction. Threads are scheduled on the basis of the usual factors: availability of resources such as CPUs and physical memory, priority, fairness, and so on. Windows has long supported multiprocessor systems, so threads can be allocated to separate processors within a computer.

From the programmer's perspective, each Windows process includes resources such as the following components:

• One or more threads.
• A virtual address space that is distinct from other processes' address spaces. Note that shared memory-mapped files share physical memory, but the sharing processes will probably use different virtual addresses to access the mapped file.
• One or more code segments, including code in DLLs.
• One or more data segments containing global variables.
• Environment strings with environment variable information, such as the current search path.
• The process heap.
• Resources such as open handles and other heaps.

Each thread in a process shares code, global variables, environment strings, and resources. Each thread is independently scheduled, and a thread has the following elements:

• A stack for procedure calls, interrupts, exception handlers, and automatic storage.
• Thread Local Storage (TLS)-An arraylike collection of pointers giving each thread the ability to allocate storage to create its own unique data environment.
• An argument on the stack, from the creating thread, which is usually unique for each thread.
• A context structure, maintained by the kernel, with machine register values.

Figure 6-1 shows a process with several threads. This figure is schematic and does not indicate actual memory addresses, nor is it drawn to scale.

Figure 6-1 A Process and Its Threads

Administrator privileges allows the user full access to a program or network second only to the system account. If you don't have administrator privileges, you cannot do certain things You may be able use a program, but not upgrade it. If you are installing a file or program and you don't have administrator privileges, you may not be able to install the program or file. If you don't have administrator privilege, you may not be able to change computer or network defaults.

To get privileges if your running vista

start menu\click on your display picture top right\turn on or off user account\tick the UAC box

• Microsoft Windows based PC
• Web browser
• Microsoft Paint
• Destination document

1. • 1

     Open your web browser and visit Google Maps. maps.google.com

   • 2

     Use the on-screen tools to zoom and pan until you have the location you want in the view. Select other options you want displayed, such as the map type, traffic and photos.

   • 3

     Hit the PrtScn (Print Screen) key on your keyboard. This will copy your computer screen as an image. This is called doing a "screen capture" or "screen grab."

   • 4

     Open Microsoft Paint or other photo editing software.

   • 5

     Select "Paste" from the "Edit" menu to paste the screen image.

   • 6

     Use the "Select" tool to select the area of the Google Map in the screen image you want to copy to your destination document.

   • 7

     Select "Copy" from the "Edit" menu. This will copy the selected area of the image.

   • 8

     Open the document or file you want to paste the Google Map view into.

   • 9

     Select "Paste" from the "Edit" menu.