There are a few things you need in order to take a screenshot on a PC. The first is an image capture device, such as a digital camera or scanner. The second is the PC itself, which you will need to be logged on to in order to take the screenshot. The third is your computer’s screen, which you will want to make as large as possible in order to capture the entire image. Finally, you will need software that can take screenshots, such as Windows’ Screenshot tool or Apple’s Screencapture tool.