do you know keyboard?

keyboard above is that we commonly see

• Keyboard is one of the essential hardware of a computer. In computing, a keyboard is a typewriter keyboard, Which uses an arrangement of buttons or keys, to act as mechanicallevers or electronic switches. With the decline of punch cards and paper tape, interactionvia teletype-style keyboards became the main input device for computers.

• there is some kind of keyboard.

 ergonomic keyboard

wireless silicon keyboard

slim keyboard

wolf king keyboard (lefthanded user)

gaming keyboard

virtual keyboard laser

Here is shortcut that you can learn :

f1	Help
ctrl+esc	Open Start menu
alt+tab	Switch between open programs
alt+f4	Quit program
shift+delete	Delete item permanently
windows logo+l	Lock the computer (without using CTRL+ALT+DELETE)
ctrl+c	Copy
ctrl+x	Cut
ctrl+v	Paste
ctrl+z	Undo
ctrl+b	Bold
ctrl+u	Underline
ctrl+i	Italic
f10	Activates menu bar options
shift+f10	Opens a shortcut menu for the selected item (this is the same as right-clicking an object
ctrl+shift+esc	Opens Windows Task Manager
alt+down arrow	Opens a drop-down list box
alt+tab	Switch to another running program (hold down the ALT key and then press the TAB key to view the task-switching window)
shift	Press and hold down the SHIFT key while you insert a CD-ROM to bypass the automatic-run feature
alt+space	Displays the main window's System menu (from the System menu, you can restore, move, resize, minimize, maximize, or close the window)
ctrl+tab	Switch to the next child window of a Multiple Document Interface (MDI) program
ctrl+f4	Closes the current Multiple Document Interface (MDI) window
alt+f6	Switch between multiple windows in the same program
f2	Rename object
f3	Find all files
ctrl+x	Cut
ctrl+c	Copy
ctrl+v	Paste
alt+enter	Open the properties for the selected object
shift+delete	Delete selection immediately, without moving the item to the Recycle Bin
f4	Selects the Go To A Different Folder box and moves down the entries in the box
f5	Refreshes the current window.
f6	Moves among panes in Windows Explorer
ctrl+z	Undo the last command
ctrl+a	Select all the items in the current window
backspace	Switch to the parent folder
shift+click+close button	For folders, close the current folder plus all parent folders
windows logo	Start menu
windows logo+r	Run dialog box
windows logo+m	Minimize all
shift+windows logo+m	Undo minimize all
windows logo+f1	Help
windows logo+e	Windows Explorer
windows logo+f	Find files or folders
windows logo+d	Minimizes all open windows and displays the desktop

• clean up keyboard