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)? Object Linking and Embedding in MS Word Semiconductor Memory Types of Parallel Computing Web Resources Difference between Virus, Worm and Trojan Horse Difference between HQ (High Quality) and HD (High Definition) What is Text Wrapping What is Timestamp? Semiconductor Ram Memory What is a File Attribute? What is a Video Call? Difference between SDRAM and DDR What is ANSI? Difference between DOS and Windows How to Set the Path and Environment Variables in Windows? Mainframe System What is ScanDisk? C drive in Mac Computer Memory Table How to Change the Keyboard Language in Windows? What is a Video Call? What is a Zoom Slider? What is Floppy Disk in Computer What is the most Popular Operating System? OMR in Computer What is a Work Area?

What is an Asterisk?

The asterisk (*) is a symbol with various uses in different contexts. In mathematics, it is often used as a multiplication operator, while in computer programming, it can be used as a wildcard or pointer. In written language, it can be used as a footnote indicator or to indicate omitted text.

What is an Asterisk?

Uses of Asterisk

In mathematics, the asterisk is used as the symbol for multiplication. For example, "3 * 4" would indicate that three is multiplied by four. It is also sometimes used as a symbol for raising a number to power. For example, "2 * 2 * 2" would indicate two to the third power, or "2^3".

In computer programming, the asterisk is often used as a wildcard, meaning that it can represent any character or sequence of characters. This is particularly useful in search functions, where users may need to learn the exact spelling or wording of what they are looking for. For example, a search for "*ing" would return all words that end in "ing", such as "running", "jumping", and "swimming".

In C, C++, and other languages, the asterisk is used as a pointer operator which declares a variable as a pointer. A pointer holds the memory address of another variable. In C++ you might use it like this:

int x = 5;
int *pointer_x = &x;

Here, pointer_x is a pointer variable that points to the memory location of variable x.

In written language, the asterisk is often used as a footnote indicator. When an asterisk is used in this context, it is typically placed after a word or phrase, with the corresponding footnote appearing at the bottom of the page or section. This allows the writer to provide additional information or clarification without interrupting the flow of the main text.

The asterisk can also be used to indicate omitted text in a quotation. For example, suppose a quoted passage contains profanity or offensive language. In that case, an asterisk can replace the offensive word with a note at the bottom of the page indicating what word was omitted.

In telecommunications, the asterisk is used as a prefix for special codes that allow users to access various features on their phone systems. For example, pressing the asterisk key followed by the number 6 and then the number 1 will allow a user to toggle call waiting on and off.

In an email, the asterisk can be used in the subject line to flag the message as high-priority or urgent.

In social media, the asterisk is often used to mark text as a "spoiler," indicating that the text contains information that could ruin a surprise or the enjoyment of a show, movie, or game for someone who has not yet experienced it.

In typesetting, the asterisk indicates a correction made to a printed text.

In sports, an asterisk is sometimes used to indicate that a record was set under unusual or specific circumstances, for example, a record set during the playoffs will have an asterisk next to it indicating it is a playoff record.

In scientific notation, the asterisk is used to indicate significant figures, for example, a measurement of 4.32*10^5 would mean 432,000, the number 4.32 has two significant figures and the exponent 5 represents the number of zeroes after the number 4.32

The use of the asterisk can also vary in different cultures and languages, For example, In East Asian languages, the asterisk is used to indicate a change or correction to a name or identification number.

The list goes on and on. The asterisk symbol is widely recognized worldwide, used in many fields, and has various meanings. Its versatility and wide recognition make it a valuable tool for conveying information and adding clarity to written and printed text.

In addition to all the above uses, the asterisk symbol is used in different fields like social media, email, and many others as a symbol for many things like bolding text, emphasizing, or indicating that something has been edited.

Advantages of Asterisk

There are numerous advantages of asterisk, such are as follows:

  • Clarity: In mathematical expressions, the asterisk is a clear and universally recognized symbol for multiplication. It makes mathematical expressions more readable, especially for those unfamiliar with mathematical notation.
  • Versatility: As in computer programming, it can be used as a wildcard, allowing developers to write more flexible code that can adapt to a wider range of inputs. This can make it easier to find and correct errors in the code.
  • Additional information: In written language, the asterisk is used as a footnote indicator, allowing the writer to provide additional information or clarification without interrupting the flow of the main text.
  • Emphasis: In social media, email, and typesetting, the asterisk emphasizes certain words or phrases, making it clear that the text is important and needs to be noticed.
  • Compactness: In scientific notation, the asterisk indicates significant figures, making scientific data more compact and easier to read.
  • Consistency: The use of the asterisk symbol is widely recognized and its consistent usage in multiple fields makes it more user-friendly and understandable.
  • Indicates changes: The use of the asterisk in typesetting and East Asian languages can indicate changes or corrections have been made, making it clearer for readers to understand the difference.

Overall, the asterisk is a useful and versatile symbol that can help to make information clear, concise, and organized. It is widely used and recognized, making it easy for readers and programmers to understand the information.

Disadvantages of an Asterisk

There are various disadvantages of asterisk, which are given below:

  • Asterisk can be easily overlooked: Depending on the context and font, the asterisk may not stand out as much as other typographical symbols, such as the exclamation mark or the question mark, confusing readers, who may miss important information or annotations that are indicated by an asterisk.
  • Different meanings in different contexts: This can lead to confusion and errors if a person is not familiar with the specific context in which the asterisk is used, such as in mathematics, an asterisk may indicate multiplication, but in programming, it may be used as a wildcard.
  • Not be appropriate in all cases: Using an asterisk to mask sensitive information or obscenity can be seen as mysterious or not addressing the problem, especially in professional or formal contexts.
  • Unsecurity: People could guess it and put it back in the context where it was used, which could lead to more misunderstandings and problems.
  • Overuse can make a text cluttered and difficult to read: The use of multiple asterisks in a text can make it look cluttered and hard to follow, making it difficult for readers to understand the main point of the text.
  • Distraction for readers: If not used appropriately, the asterisk can lead readers away from the text's main point, as they may become more focused on the asterisks rather than the content of the text.
  • Multiple uses in the same text may create confusion: Without clearly identifying the purpose of the asterisk in each case, it can be clearer for readers to understand the author's intent.

Top of FormTips for using asterisk effectively

Use the asterisk sparingly: To avoid overwhelming the reader and making the text appear cluttered, it's important to use it sparingly and only when necessary.

Indicate the purpose of the asterisk: When using it, it's important to indicate its purpose, whether to indicate a footnote or reference, express multiplication or mask sensitive information.

Provide additional information in a logical place: If using the asterisk to indicate a footnote or reference, it's important to provide the additional information in a logical place, such as at the bottom of the page or in a separate section of the document.

Use consistent formatting: When using the asterisk, it's important to use consistent formatting, such as using the same font and size for all asterisks, to help them stand out and make them easily recognizable.

Avoid using asterisks to mask sensitive information or obscenity: Instead, consider other ways to address the sensitive information and communicate it effectively and appropriately.

Be mindful of accessibility: When using the asterisk, be mindful of accessibility and ensure that it is easily distinguishable for people with visual impairments.

Be consistent in your usage of an asterisk: Be consistent in its purpose; this will make it easier for the reader to understand and follow the text.

Test your documents: Test your documents in different electronic platforms and formats to ensure the asterisks appear as intended and won't cause formatting issues or confusion for the reader.

By following these tips, you can effectively use the asterisk in your text and avoid its potential disadvantages.

Important Points about Asterisk:

  • The asterisk is a typographical symbol or punctuation mark used to call attention to a note or annotation that appears elsewhere in a text or document.
  • The word "asterisk" comes from the Greek word "asteriskos", which means "little star".
  • The most common uses of the asterisk are to indicate a footnote or reference in a text, express multiplication in math, use it as a wildcard in programming, or mask sensitive information.
  • The asterisk can easily be overlooked and confuse readers if not used appropriately, leading to confusion and errors.
  • The asterisk can have different meanings in different contexts, so it's important to be aware of the specific context in which it is used.
  • Using an asterisk to mask sensitive information or obscenity may not be appropriate in all cases and doesn't eliminate the problem.
  • It's important to use the asterisk clearly and consistently and ensure that readers know its meaning and significance in the text.
  • To effectively use the asterisk, it's important to use it sparingly, clearly indicate its purpose, provide additional information in a logical place, use consistent formatting, and be mindful of accessibility.
  • When using the asterisk, test the documents in different electronic platforms and formats to ensure it appears as intended and won't cause formatting issues or confusion for the reader.


An asterisk (*) is a typographical symbol or punctuation mark used to call attention to a note or an annotation appearing elsewhere in a text or document. It can indicate a footnote or reference in a text, express multiplication in math, be used as a wildcard in programming, or mask sensitive information. However, the asterisk can be easily overlooked and confuse readers if not used appropriately. It's important to use the asterisk clearly and consistently to ensure that readers know its meaning and significance in the text.