Computer science information and technolgy

Q.Which of the following is the smallest unit of data in a computer?
a) Bit
b) KB
c) Nibble
d) Byte

Computer Shortcut Keys (Function keys) –
F1 key – Display Help
F2 key – To Rename the selected item
F3 key – Search for a file or a folder
F4 key – Display the Address bar list in My Computer or Windows Explorer
F5 key – Refresh the active window
F6 key – Cycle through the screen elements in a window or on the desktop
F7 key – To spell check and grammar check in MS Word document, Outlook, etc
F8 key – Used to enter the Windows startup menu, mainly used to access Windows Safe Mode
F9 key – Refresh document in Microsoft Word
F10 key – Activate the menu bar in the active program
F11 key – Maximize or minimize the active window
F12 key – Open the Save as window in Microsoft Word

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General Computer Shortcut Keys –
Ctrl + A – Select all
Ctrl + C – Copy the selected content
Ctrl + N – Open a new console
Ctrl + V – Paste the selected content
Ctrl + W – Close the Windows Explorer or browser
Ctrl + X – Cut the selected content
Ctrl + Y – Redo an action
Ctrl + Z – Undo an action
Ctrl – while dragging an item (Copy the selected item)
Ctrl + Shift – while dragging an item (Create a shortcut of the selected item)
Ctrl + Shift +Esc – Open the Task Manager
Ctrl + Shift – With any of the arrow keys (Highlight/Select a block of text)
Ctrl + Esc – Display the Start menu
Ctrl + F4 – Close the active document in programs that enable you to have multiple documents open simultaneously
Ctrl + Click (On Underlined link or URL on document) – Opens the link in the browser
ALT + D– Select the address bar
Alt + Enter – View the properties for the selected item
Alt + F4 – Close the active item, or quit the active program
Alt + Spacebar – Open the shortcut menu for the active window
Alt + Tab – Switch between the open programs/windows
Alt + Esc – Cycle through programs/windows in the order that they had been opened
Alt + Spacebar – Display the System menu for the active window
Shift – With any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
Shift + F10 – Displays the shortcut menu for the selected item(Works as a right mouse click)
Delete – Delete the content and move it to Recycle bin.
Shift + Delete – Delete the selected item permanently without placing the item in the Recycle Bin
Right arrow – Open the submenu or open the next menu to the right
Left arrow – Close the submenu or open the next menu to the left
Backspace – View the folder one level up in My Computer or Windows Explorer
Esc – Cancel the current task
Shift – when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from automatically playing)

 HTM: Hierarchical Temporal Memory.
 HTML: Hypertext Markup Language.
 HTTP: Hypertext Transfer Protocol.
 HTTPD: Hypertext Transfer Protocol Daemon.
 HAL: Hardware Abstraction Layer.
 HCI: Human-Computer Interaction.
 HID: Human Interface Device.
 HIG: Human Interface Guidelines.
 HP: Hewlett-Packard.
 HPFS: High-Performance File System.
 HT: Hyper-Threading.
 HD: High Density.
 HDD: Hard Disk Drive.
 HD DVD: High Definition DVD.
 HDL: Hardware Description Language.
 HHD: Hybrid Hard Drive.
 HTX: Hyper Transport Expansion.
 HURD: Hird of Unix-Replacing Daemons.