Computer
Here are some shortcut keys of computer applications, that applications used regularly while working on PC and students who doing their computer course. it is so useful for that student.

MS-Paint
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New File = Ctrl + N
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Open = Ctrl + O
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Save File = Ctrl + S
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Open print Window = Ctrl + P
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Cut = Ctrl + X
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Copy = Ctrl + C
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Paste = Ctrl + V
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Undo = Ctrl + Z
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Redo = Ctrl + Y
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Underline the text = Ctrl + U
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Bold The Text = Ctrl + B
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Go To Tab = Alt + F
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Use Pencil = Alt + H + P
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Use Eraser = Alt + H + E + R
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Increases eraser size = Ctrl + (+)
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Decrease eraser size = Ctrl + (-)
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Use fill with color = Alt + H + K
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Use Color Picker = Alt + H + D
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Use Text Tool = Alt + H + T
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Use magnifier = Alt + H + M
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Use brush Tool = Alt + H + B
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Use edit color = Alt + H + E + C
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Close File = Alt + F4

Notepad
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New File = Ctrl + N
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Open = Ctrl + O
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Save File = Ctrl + S
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Open print Window = Ctrl + P
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Cut = Ctrl + X
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Copy = Ctrl + C
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Paste = Ctrl + V
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Undo = Ctrl + Z
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Redo = Ctrl + Y
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Underline the text = Ctrl + U
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Bold The Text = Ctrl + B
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Go To Tab = Alt + F
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Use magnifier = Alt + H + M
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Find = Ctrl + F
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Delete = Del
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Replace = Ctrl + H
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GoTo = Ctrl + G
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Insert time and date = F5
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select all = Ctrl + A
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Close File = Alt + F4

Wordpad
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New File = Ctrl + N
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Open = Ctrl + O
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Save File = Ctrl + S
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Save as = F12
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Open print Window = Ctrl + P
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Cut = Ctrl + X
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Copy = Ctrl + C
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Paste = Ctrl + V
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Undo = Ctrl + Z
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Redo = Ctrl + Y
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Underline the text = Ctrl + U
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Bold The Text = Ctrl + B
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Go To Tab = Alt + F
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Use magnifier = Alt + H + M
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Find = Ctrl + F
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Delete = Del
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Replace = Ctrl + H
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GoTo = Ctrl + G
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Insert time and date = F5
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select all = Ctrl + A
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Close File = Alt + F4

Google chrome
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Open new window = Ctrl + N
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Open new tab = Ctrl + T
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Restore previous page = Ctrl + Shift + T
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Jump to the next tab = Ctrl + tab
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Jump to specific tab = Ctrl + 1
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Close the current tab = Ctrl + w
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Close current window = Ctrl + Shift + W
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minimize current window = Alt + Space + N
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maximize current window =Alt + space + N
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Quit Google chrome = Alt + F + X

Search Engines
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Google
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yahoo
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Ask.com
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Bing
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Biadu
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Yandex
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DuckDuckGo

Imp domains
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.com = Commercial
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.net = network
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.gov = goverrnment
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.edu = educational
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.mil = military
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.org = organization
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.int = international