Computer Fundamentals Index

Computer Introduction Types of computer Characteristics of computer Uses of computer History of Computers

Computer Languages

Low Level language Middle level Language High level language

Computer Generation

Generation of Computers First Generation of Computer Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers Sixth Generation of Computer

Peripheral Devices

Input devices Output device


Block diagram and basic components Control processing unit (CPU) Software Hardware


Computer Memory Registers Memory Hierarchy RAM Vs ROM Understanding file sizes (Bytes, KB, MB, GB, TB, PB, EB, ZB, YB)

Computer Network

Types of Network Types of Area Networks (LAN, WAN, MAN) TCP Flags

Computer Virus

Computer Virus

Computer Ports

Computer Ports


How to hack a computer How much do Computer Programmers make How does a Computer work How to associate a file with a program How does a computer convert text into binary How does a computer process data into information How to fix a CD-ROM DVD How to fix the no input signal How to install computer memory How to associate a file with a program How to log out of your operating system How do I change my name on Google How to installation or uninstallation Microsoft Paint How to fix a not a valid Win32 application error How to fix missing Microsoft Windows .dll files How to use a computer keyboard How to erase my hard drive and start over How can I test how many words I can write a minute How to shut down a computer How do I open and edit the Windows registry How to edit the registry from the command line How to restart Microsoft Windows How to install a computer processor How to open Microsoft Paint How to fix problems in Windows after installing new software How to enable or disable the preview pane of Microsoft Outlook How to open a Microsoft .wps or Works file in Word How to view the HTML source code in Microsoft Word How to View or Change the Screen Resolution of a Monitor How to Connect and Install a Computer Keyboard How to Delete Temporary Files in Windows 10 How to determine Which Version of Microsoft Office I'm using How to find out how much hard drive space is available How to Fix PC Stuck on Verifying DMI Pool Data How to choose which items show in the notification area How to find similar images using Search by Image How to fix Low Memory and out of memory errors How To Replace the CMOS Battery How do I Update my Antivirus Program How to fix a general protection fault How to Identify problems in the Windows Device Manager How can the Base be Shown How to test if a Website or Web Page is down How Much is 1 Byte, Kilobyte, Megabyte, Gigabyte, etc How to fix a CMOS checksum error How to Fix a Windows CD-ROM, DVD, or Disc Drive Issue How to Open Safe Mode How to Password Protect Files and Folders in Windows How to Reset CMOS or BIOS Settings How to use Computer Keyboard How to create a text file How to enable or disable DHCP in Windows How to test computer memory to determine if its bad How do double space or change line spacing in Microsoft Word How do I know if I have Windows Administrator Rights How many cores does my computer have How to Create a Directory or Folder How to Enter and Exit the BIOS or CMOS Setup How to change Windows Compatibility mode How to clear your internet browser history How to Connect Computer Speakers How to Copy a Web Page Link or URL How to install a Hard Drive or SSD How to Open the Windows Control Panel How to split a screen in Windows How to copy text from a scanned PDF


Who invented Computer What are the advantages of the Internet? What are the disadvantages of the Internet? Is my computer 64 bit? What is Edge Computing? What is a Router? What is Monitor What is Printer What is a Web Browser What is Microphone What is a Webcam What is PC What is Keyboard What is Motherboard What is WAP What is URL What is a Digital Assistant When was the first Computer Invented What is Modem What is Firmware What is Imperative Programming What is Protocol What is Safe Mode What is Device Driver What is Hybrid Topology What is Mesh Topology What is Procedural language What is a hyperlink What is a Username Who invented the Internet What is Video Card What is Sound Card What is Binary What does Alt+B do What does Alt+D do What does Alt+E do What does Alt+Esc do What does Alt+R do What does ALT + Q do What does Alt + Tab do What is Data Manipulation What is a touch screen What is Back Panel What is Analog Monitor What is AR lens What is an ATX Style Connector What is a File System What is Hard Disk Drive (HDD) What is a boot device What is accessibility What is Line In What is network Interface card (NIC) What is Optical Disk Where can I ask questions on the internet What is Auto Rotate What is CAD (Computer-aided design) What is Cable Modem What is Home Page What is boot menu What is braille reader What is flash memory What is Windows What is Clipboard What is Cyber Warfare What is Myspace Why has my IP address changed What is Jacquard Loom My computer is running slow, what steps can I do to fix it What is a Kensington Lock What is a multicore processor What is automation Are smartphones and tablets computers What is a Login Script What is a Loosely Typed Language What is Multitasking? Why my computer monitor shows no display or black screen What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is the Pg Dn Key (Page Down Key) What is the Pg up Key (Page up Key) What is Palmtop Computer What is a Processing Device What is a Print Preview What is the Print Screen Key What can I do if my computer or laptop is lost or stolen What is a Model Number What are the currently available antivirus programs What are Toggle keys What is a Case fan What is a Silicon Chip What is a Slate PC What is a TAB stop What is an Octothorpe What is Task Pane What is Task View What is the svchost.exe file used for in Windows Where can I find free online virus scanners Why am I unable to increase the resolution in Windows What is Autofill When I click my mouse, it sometimes double-clicks What is Scratch What is UDIMM What is MsConfig What is an Expansion Card What is an Executable File What is an Elevated Command Prompt What is an AC Adapter What is AIMBOT What is a Software Suite What is a LED Monitor What does Alt + X do What does alt + space do What does Alt + O do Now that I’ve got a Computer, what can i do What is a Punch Card What is RDIMM What is Select All What is Serial number What is Thermos flask What programs can I use for speech recognition What are the Advantages of Computers What are the Disadvantages of Computers What does Alt + T do What Hardware Device Drivers should be Updated What is a Desktop What is a Ring Topology What is CMOS What is a Directory What is a Mechanical Mouse What is a Plotter What is a Variable What is an Icon What is Data What is HDMI What is Remote What is Right-Click What is SMPS Why does my Laptop not turn on What is a Copyright What is a Cordless Mouse What is a CSV file What is a Joystick What is a Start Button What is a Taskbar What is an Alignment What is an Output Device What is Cat 5 What is Google Chrome What is Post What are Recordable DVD Drives What Does Alt + F4 Do What Does Alt + L Do What is a bit (Binary Digit) What is a cable What is a Calculator What is a capacitor What is a Cold Boot What is a Dialog Box What is a Dual-boot What is a Slide What is A4 What is AM What is Barcode Reader What is EHCI What is a Header What is a Joystick What is a Secondary Storage Device What is Access Time What is Account Sharing What is an Asterisk What is Asynchronous DRAM What is Back Quote What is BIOS What is Borderless Printing What is Case Badge What is CD-ROM What is Chat Slang What is Composite What is RJ Cable What Are Bottom Row Keys What is SAN What is Tray What is VDU What Does Alt + M Do What Does Alt + P Do What is a Cell What is a Command Key What is a key Combination What is a Menu Bar What is a Startup What is a T What is Chat What are the F1 through F12 keys What does Alt + Enter do What Does Alt + Home DO What does Alt + R do What does Ctrl + B do What Does Ctrl + Enter Do What Does Ctrl + R Do What does Ctrl + G do What does Ctrl + 9 do What does Ctrl + End do What does Ctrl + O do What Does Ctrl + P do What Does Ctrl + Q do What is a Colon What is a Core What is Apple Touch Icon What is Clock What is Code What is Computer Crime What is Ctrl What is DAT What is Data diddling What is Date Why won't my computer turn on What Does Alt + N Do What does ctrl + 2 do What does ctrl + space do What does Ctrl + W do What does Ctrl + T Do What Does Ctrl + 2 do What does Ctrl + 5 Do What are the most common file types and file extensions What are Sticky keys What Does Ctrl + Shift + Esc Do What is Settings What is Task Manager What is Taskbar What is a DNS Resolver What does ctrl + 1 do What does ctrl + 0 do How to install software What is a Folder What is a Legend What is a MAC Address What is a Path What is a Ruler What is a Toolbar What is an Intranet Meaning and Differences with Internet What is an SSD What is Inheritance What is Tablet What is Depth What is Docking Station What is Double Click What is a Solid Ink Printer What is a Temporary File What is Backup and Restore What is Electronic Payment Systems Eps What is Marshalling


Difference between hardware and software Difference between multiprocessor and distributed systems Difference between Desktop and Laptop Difference between File and folder Difference between Hard Copy and Soft Copy Open Source Programs vs Closed Source Programs Difference between Optical Fibre and Coaxial Cable Difference between Website and Webpage Difference between Classes and Objects Input VS Output Difference between Primary and Secondary Storage with Examples


Quantum Computing Computer Software Autoexec.bat and config.sys info Update an Antivirus Use of Internet Advantages and disadvantages of Email Computing Power Internet Explorer Shortcut Keys Advanced Encryption Standard (AES) Augmented Reality Infrastructure Readiness Check Top 10 Internet tips and tricks Introduction and Features of FoxPro Features of Multimedia Top 10 online services and applications Receiving S.M.A.R.T. status bad backup and replacing error Version Control System Uninstalling Software or Apps in Windows Data Warehouse Increase or decrease font size in Word using keyboard shortcuts Mouse not detected or working in Windows Computer Cleaning Information and Steps Function Keys on Keyboard Windows 7 Alt+Tab won’t stay on top or stick 10 Essential Examples of Web Browsers Binary Subtraction using 2’s Complement Case Sensitive Languages Computer Pioneers and people who are CEO Microsoft Word Shortcut Keys Parts of Computers Names, Definitions and Images ROM and its Types Basics of Information Technology Characteristics of a Good Software Design Characteristics of Management Information System Classification of Management Information System Implementation of MIS Input Devices of Computer Definition Limitations of Management Information System 3 Types Of Network in Computer Block Diagram Of Control Unit Difference Between Computer and Embedded System Difference Between Hard Disk and Floppy Disk Abstraction in OOAD Hardware and Software Devices Optomechanical Mouse CMOS Memory What is a Terminal? What is Graphic Design? What is Load? What is Passcode? What is Reboot? What is Registry? What is Safe Mode? What is Standby? What is SYN (Synchronize)? What is Task Manager? Attribute Computing BPS in Computer Bulletin Board System Light Pen Input Device 3 TYPES OF NETWORK IN COMPUTER Block diagram of control unit What is a Solid Ink Printer? What is a Temporary File? What is an App launcher? What is Backup and Restore? What is a Tab Character? What is the Core i3? What is Paint? What is a Workbook? Advantages and Disadvantages of Online Education What is a String? What is a VDU (Visible Display Unit)? 50 Uses of Computer What is Workspace? What is a Procedural Language? What is VGA (Video Graphics Array)?

What does ctrl + space do

Ctrl+Space is a keyboard shortcut used in Excel and other spreadsheet programs to select an entire column. When you press Ctrl+Space, it selects all cells of the column that contains the active cell.

What does ctrl + space do

This keyboard shortcut is particularly useful when you want to work with data in a specific column, such as formatting cells or applying a formula to the entire column.

How to use the ctrl + spacebar keyboard shortcut

To use the Ctrl+Spacebar keyboard shortcut to select an entire column in Excel or other spreadsheet programs, you can follow these steps:

  1. Open the spreadsheet and navigate to the worksheet that contains the column you want to select.
  2. Click on any cell within the column you want to select to make it the active cells.
  3. Hold down the Ctrl key on your keyboards.
  4. While continuing to hold down the Ctrl key, press the spacebar key on your keyboards. This will select the entire column that contains the active cell.
  5. You can now perform any actions you want to perform on the selected column, such as formatting cells or applying a formula.

Note: Ctrl+Spacebar keyboard shortcut will only select the column that contains the active cells. If you want to select multiple columns, you can use the Shift key and the arrow keys to select additional columns after using Ctrl+Spacebar to select the first column.

Ctrl + spacebar in excel and other spreadsheet programs

In Microsoft Excel and many other spreadsheet programs, pressing Ctrl+Spacebar selects the entire column containing the active cell. This keyboard shortcut is a quick and convenient way to select an entire column, which can be helpful when working with large data sets. By selecting the entire column, you can apply formatting or formulas to all the cells in the column at once, rather than having to apply them individually to each cell. This can save a lot of time and effort, especially when working with complex spreadsheets.

Popular programs using this shortcut


  • Windows 11: Turn the Chinese input method editor (IME) on or off  
  • Opera:  Go to your home page  
  • Mozilla Thunderbird:  Discontinue or remove text styles 
  • Easy Worship:  Switch between live output and a control screen in the single monitor mode 
  • Ardour:  Stop and destroy 

Text editing

  • Sublime Text: Select the next auto-complete suggestion 
  • GNU Emacs: Set mark here 
  • Brackets: Show Code Hints 
  • Nano:  go forward one word 
  • Cherry Tree 0.38.8: Toggle To-Do List Item State 
  • Texmaker 5.0.4: Toggle focus editor / Pdf viewer  
  • PSPad: Show the Clips 
  • Kompo Zer: Open the Context Menu 
  • Notepad2: Select the word (or line)  
  • Scrivener 1.9.9: To single space
  • CudaText 1.88.3:  Auto-complete menu 
  • QOwnNotes 19.10.10:  Autocomplete, solve the equation, or open the URL 
  • Notepad3 (v5.21):  Select Word or Lines. 
  • Google Docs (PC):  Clear the text formatting  
  • Write Monkey:  Open the Command palette 
  • WikidPad (Windows):  Complete Auto link (or attribute) 
  • Metapad:  Select the word 


  • Clip Studio Paint Pro:  Zoom (scale up) 
  • Blender:  Transform the Manipulator toggle 
  • Adobe Premiere Pro (Windows):  Play from Play head to Out Point 
  • Adobe Illustrator:  Switch to Zoom tool in the magnify mode 
  • Pure Ref:  Focus on the Canvas 
  • CorelDRAW 2020:  Toggle Pick State 
  • Adobe Photoshop CC:  Switch to the Zoom In tool 
  • Corel Painter:  Zoom tool (zoom-in) 
  • Adobe Premiere Pro (Mac):  Play from Play head to Out Point 
  • Navisworks Freedom 2020):  Pause the playing animation. 
  • Inkscape:  insert no-break space 
  • Autodesk Maya 2019:  Switch between the standard view and full-screen view of the current panels 
  • QCad 3.22.0:  Focus on the Option toolbar 
  • Open Toonz 1.4:  Rotate the tool 
  • Shortcut:  Select the under playhead 
  • CorelDRAW Graphics Suite 2018:  Toggle Pick State 
  • Kdenlive:  Play the zone 
  • Enterprise Architect 14:  Add a single element to the clipboard list. 
  • Grasshopper (Rhino): Open the radial menu 
  • Modo 12.1: GL viewport view type 
  • Shotcut (Mac): Select the underplay head  

System tools

  • Moba Xterm 20.6: Execute a macro 
  • Ditto: Toggle Ditto window between normal and always showing on top (persistent) 
  • ZOC 7.23:  Send ^@ (hex 00)  
  • JAWS:  Select Multiple List Items  
  • WireShark 3.4.3:  Reset colorized conversations

Developer tools

  • Visual Studio Code (Windows):  Trigger suggestion 
  • Unreal Engine 5.0 (early access):  Open content browser drawer 
  • DBeaver 6.0.3:  SQL completion proposals popup 
  • Notepad++:  Launch Call Tip ListBox 
  • Visual Studio Code (Mac): Trigger suggestion 
  • PyCharm 2018.2:  Code completion for any class, method, or variable. 
  • Spyder 4.1.5:  Code completion 
  • SQL Server Management Studio (SSMS):  Complete word 
  • Python IDLE for Windows:  Show completions  
  • Eclipse:  Open content assist (e.g., show available methods or field names)  

Web applications

  • Trading View:  Autocomplete 
  • Duolingo:  Replay audio 
  • Chromebook and Chrome OS:  Switch to the previous keyboard language that you were using 
  • Netflix:  Toggle by frame 

File Manager

  • Midnight Commander (macOS):  Show directory sizes  
  • Mp3tag:  Displays format string helper menu (e.g., at converters or actions) 

Media Player

  • GOM Player:  Stop 
  • VFC Capture (Verba) Media Player:  Strop/Pause the playback. 

Games - PC

  • Assetto Corsa:  Recenter view 
  • DayZ:  (Stable branch) Toggle Raise Weapon  
  • Space Engineers (PC):  Move the character to the spectator 
  • X-Plane 11:  Quicktime record 
  • Pathfinder Wrath of the Righteous (PC):  Turn-based Mode 
  • Jurassic World Evolution 2 (PC):  Random Rotation 
  • Trainz: A New Era:  Toggle GUI 
  • Unrailed (PC):  Emoji Wheel B 
  • Hearthstone: End turn 
  • ChessBase 13:  Insert the best variation of all engines into the notation 
  • Jurassic World Evolution:  Random rotation  


  • FL Studio 20:  Start/Pause Playback 
  • Epic:  Jump to Epic search function 
  • Studio One 5.4:  Locate the Mouse Cursor 
  • Aegisub:  Toggle focus between the video slider and the previous thing to have focus 
  • Virtual DJ 2018:  Automix 
  • Nuendo 10:  Toggle selection  
  • Steinberg Cubase 10.5:  Toggle selection 
  • Lucidchart:  Open the feature and find 
  • Finale 26:  (and drag across music) “Scrub” onscreen music - all staves 
  • Bitwig Studio 4.2:  Toggle selection Of item at the cursor 
  • Guitar Pro:  Play from the beginning  
  • Vegas Pro 18:  Play from any window 
  • Quip:  Select the column 
  • Cakewalk by Bandlab:  Stop with Now marker 


  • Archicad 24:  Suspends highlight of selected elements. 
  • Eplan Platform 2.9:  Jump from cross-reference to centerpiece 
  • Eagle 9.5.2:  Cycle the start layer forward when starting from a multi-layer object 
  • LabView:  Displays the Quick Drop dialog box. On Chinese keyboards, press the Ctrl-Shift-Space keys. (Mac OS X) Press the Command-Shift-Space keys 
  • JMP 15:  Display list of valid commands 
  • Math Type 7:  Thin spaces (1/6 em) 
  • Google Looker (Windows, 2023): Show the autosuggest tips 
  • Microsoft Power BI Desktop: Multi-select 
  • Onshape 1.98: Quick tab switching  


  • Nulaxy KM12 Bluetooth Keyboard: (only iOS) Switch language 
  • Jelly Comb foldable B003 and B047: (for iOS) Switch physical keyboard input method 

Related Keyboard Shortcuts Keys

Here are brief explanations of each related keyboard shortcut and key:

  1. Alt+spacebar: This is a keyboard shortcut used to open the window menu for the active window in Microsoft Windows. When you press Alt+spacebar, a drop-down menu appears with options such as Restore, Move, Size, Minimize, Maximize, and Close.
  2. Ctrl: The Ctrl key is a modifier key that is used in combination with other keys to perform various functions. In addition to Ctrl+Spacebar, there are many other keyboard shortcuts that use the Ctrl key, such as Ctrl+C to copy, Ctrl+V to paste, Ctrl+Z to undo, and Ctrl+A to select all.
  3. Spacebar: The spacebar is a key on the keyboard that is used to insert a space between words or to activate various functions in combination with other keys. In addition to Ctrl+Spacebar, there are many other keyboard shortcuts that use the spacebar, such as Shift+Spacebar to select an entire row in Excel and Spacebar to pause or play a video.