Ctrl+Shift +Tab moves backwards between tabs. ?
Tab moves forward between options. Shift+Tab moves backwards between options. ?
ALT+ underlined letters execute the corresponding command or select the corresponding option. ?
Enter executes the command corresponding to the activated option or button. ?
Spacebar If the active option is a check box, select or clear the check box. ?
When the arrow keys are a set of option buttons, please select a button. ?
Fn+F 1 Enter standby or sleep state Fn+F2 Wireless network and Bluetooth function switch (models with Bluetooth) Fn+F3 or F4 For models with backlit keyboard function, adjust backlight Fn+F5 or F6 to adjust LCD brightness? Fn+F7 LCD backlight switch? Fn+F8 switch external visualization? Fn+F9 switch touchpad? Fn+F 10 mute switch? Fn+F 1 1 lower the volume? Turn up the volume.
The 26 letter keys are used for typing, and the numeric keys are used for inputting numbers.
The inventor of QWERTY keyboard is C. Shoals, who lived in the American Civil War in the19th century and was the editor of Milwaukee News. With the help of his good friend Saul, Shoals developed the page numbering machine and obtained the invention patent. Glidden, a colleague of the newspaper, suggested that he further develop a typewriter on this basis and bring him the experimental data of the British.