Win 8 system standard touch keyboard open method

For example, after I used the Windows 8 tablet, I encountered a lot of trouble when I touched the keyboard. The typical example is the lack of up and down direction keys, as shown in the figure: Windows 8 provides the touch keyboard by default, and the left and right corner keys are only in the lower right corner. There is no ESC, Insert, up and down direction keys (the up arrow next to Shift), etc., still not in the symbol input section.
Finger clicks are difficult compared to the convenience of standard buttons. For example, in Word and Excel, the up and down arrow keys can be used to precisely position in the same column, but the touch is difficult to guarantee. In addition, many desktop software need to press ESC, Home, Pause, etc. to continue or implement certain functions, and omitting these keys will bring software compatibility problems. A simple example, using the up and down keys to quickly access previously run commands in the CMD command prompt, is very convenient when entering complex commands. The use of the above touch keyboard causes this feature to be missing, which is very inconvenient.

Does Microsoft have a standard full keyboard? After observing it for a long time, it seems that there is a standard mode in the keyboard switch button, and it can be used in the login screen. But after logging in, this button has been unusable (see the highlight in the picture):

Originally, the option to turn on the full keyboard is in the <quo;Computer Settings">General” After the option is turned on, the button in the above figure can be used. The standard full keyboard that is switched out is shown in the figure. The aforementioned ones can be solved inconveniently:

Windows 8 is not a mobile like iOS. The operating system must be mobilized while ensuring the compatibility of the original software and hardware. I believe that such a full keyboard can solve the difficulties of many users.