How to use the prtsc key?
Usage 1
In early text-based and command line operating systems (such as MS-DOS), the function of PrtSc is to The entire screen is sent to a standard printer for printing.
Usage 2
Its meaning is different in the current operating system. When you press this button in the graphical operating system (i.e. screenshot), the system will automatically temporarily store the content displayed on the current screen as a bitmap image in the random processing memory. At this time, you can open any software that can read the memory (such as Paint, Photoshop, or WORD, POWERPOINT etc.) and paste (Ctrl V) the image and you can edit the screenshot at that time.
In Microsoft Windows systems, if combined with Alt, you can also capture active windows or dialog boxes.
On some keyboards, this key will be placed together with the System Request key (System Request, abbreviated as SysRq), but this command is not enabled in Windows.
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