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How to turn on a desktop computer Locate and press the power button on the front or top of the computer. The button should be similar to the picture shown at the top of this page. When looking for the computer button, look in the middle center or top-right corner of the computer case. Turning on the computer boots the operating system; for example, Microsoft Windows.  Its main components are keyboard, mouse, CPU and monitor. To turn on a computer, you need to switch on the main switch, CPU and then the monitor in order. To turn it off, you are required to select the shutdown option from the homepage, then switch off the monitor and the main switch.

 Technology is the application of conceptual knowledge to achieve practical goals, especially in a reproducible way.[1] The word technology can also mean the products resulting from such efforts,[2][3] including both tangible tools such as utensils or machines, and intangible ones such as software. Technology plays a critical role in science, engineering, and everyday life.

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