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 Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers

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


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


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


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

What is a Webcam?

Webcam is a peripheral digital camera that can be attached to the device, which allows you to click photos and record videos directly on the system. There is various webcam available on the market. The user is required to install dedicated software responsible for establishing the connection of the webcam to the system. The user can use the webcam to share the video over the internet and attend video conferences.

What Is A Webcam

It enables the user to use video calling applications over personal computers, such as Skype. The user can also share their live videos; the new webcam enables the user to record high-definition videos in the system. The webcam captures photos as an input device which are then sent to the servers from where they are forwarded to the hosting site. The modern webcam is attached to the system using USB ports. The new versions of monitors and laptops have inbuilt webcams generally embedded on the top of the screen. 

Characteristics of a webcam

  • Webcams are cost-effective. They are cheap when compared to other models of the camera.
  • The resolution of the photos or videos is comparatively less than most of the camera’s handheld cameras available on the market.
  • The features provided by the webcam vary from system to system. It is dependent on the operating system and the processor of the system.
  • Moreover, it depends on the software used to operate the webcam. It is an extremely useful device as it allows users to perform advanced tasks such as motion sensing, image archiving, and automation.
  • They are used in various systems to run image recognition or face detection software. They are used extensively for security and surveillance.
  • Furthermore, during the covid pandemic, webcams were extensively used to organize various meetings; they enabled the institutions to carry out examinations from home. They are used to verify the identity of persons in the examination centers. 

Types of a Webcam

There are various webcams available in the market. Some of the webcams are mentioned below:

  • Integrated webcam: Most latest versions of laptops, handheld personal computers, and Macbooks have in-built webcams. They are generally located on the top of the screen. In some older models of Dell personal computers, the camera was located at the bottom of the screen. These webcams enable the user to click photos or record videos. The user does not require to additionally download any software for using in-built webcams. The user can capture low pixels images using the software. The user can perform video calls on these systems. It saves space and reduces the need for multiple USB ports. It provides a compact design to the system. It is easy to use as no additional external device is required.
What Is A Webcam
  • Standalone Webcam: These webcams are most commonly used with systems that do not have a built-in webcam. They constitute a lens and a click or a stand to support the camera. The camera is attached with a cable that can be attached to the system; it is used to transfer the data between the webcam and the system. The user is required to install additional software to use a standalone webcam. It allows the user to click high-definition images. There are various variants of standalone webcams available in the market. The user can select any depending upon the user's purpose and budget.
What Is A Webcam
  • Network Cameras: They can perform all the functions provided by a conventional webcam. The only difference in a network camera is that it uses an Ethernet cable or Wireless network for transmitting the data. At the same time, a conventional webcam is attached to the system using USB cables. This allows the webcam to directly transfer the data on a network. Therefore, they are used extensively in closed circuit televisions where the live feed is shared over a network. This makes it the most suitable for online video conferencing. Although the cost of a network camera is comparatively less than a webcam, they require a high-speed network connection to work properly.
What Is A Webcam
  • Webcams with Microphones: These webcams do not require a microphone as they have an in-built microphone. This reduces the need for an additional peripheral device. The user should avoid using them when using the speakers as the sound from the speaker can interfere with the microphone's input. Therefore, they are not very effective for two-way communications. Moreover, they also require space for power devices.
What Is A Webcam

Features of Webcam

There are various models of webcam available on the market. They come in various sizes, shapes, and specifications, depending on their purpose. The price of the webcam depends on all these features.


Digital images constitute various small dots of colors. They are tightly bonded together to form an image. To produce bright images using the webcam, the user needs to ensure that the pixels of the webcam is as high as possible. The webcams provide a wide range of pixels displayed. Generally, the webcam provides 320X240 or 640X480 pixels, but the latest webcam's specifications go as high as 1280X720 pixels. They allow the user to capture or record high-definition graphic content.

Frame Rate

The megapixels of a webcam determine the brightness and color definition of the image. The frame rate is a term that is used for video-graphic content. It refers to the quality of the video. It decides the ability of the webcam to display images per second. It decides the number of images displayed every second in video graphic content. The quality of the video increases with the increase in the frame rate. The webcam should at least be able to display 30 images per second for a sound video. If the frame rate is less than this, then there will be inconsistency in the video that is being recorded. The frame rate goes as high as 60fps. These webcams allow users to record high-quality, smooth videos without any discrepancy.

Lens Quality

The lens is a major component of the webcam as it directly affects the quality of the captured photos or videos. Therefore it is very important to use the right lens on the webcam. Usually, a webcam lens is made up of either glass or plastic. The webcam equipped with a plastic lens is comparatively cheaper than those equipped with a glass lens. The quality of the image or video significantly increases by changing the lens from plastic to glass. So, if the user needs to record high-definition videos, it is recommended to invest in glass lens webcams.


This is a feature available in selected webcams. While recording a video or clicking a photo, there can be many elements in the background. These features enable the webcam to focus on a specific element. However, this function can increase the time required to capture the photo. This slows the functioning of the webcam.

Low Light Quality

Suppose the user wants to capture photos or record videos in low light, that is, during evening time or in poor light conditions. Some webcams provide a special mode that enables the user to capture clear images in dim light. Some webcams of Logitech provide the Right Light feature that improves the quality of images.


They determine the display quality of the image or the video. Almost all the latest models of the webcam support 720p and 1080p high-definition quality but some expensive webcams enable the user to record 4k videos. Any webcam with a 1.3 to 2-megapixel resolution lets the user record a clear video or click clear images without overdoing the resolution.

Application of webcam

Webcams are widely used in various fields. They are used to capture photos and videos. This device is very useful as it can be directly connected to the system and store the images and videos directly in the computer's main memory. Some of the applications of the webcam are given below:

Security and Surveillance: Webcams are installed in various corporate buildings and households. They are used in stores, shopping malls, offices, railway stations, airports, etc. It enables the user to track the motion of people and goods. They are used to monitor unauthorized people. They increase security as the user can keep a check on suspicious activities.

Banking Sectors: Webcams are used in banking sectors for various purposes. They are used for monitoring and surveillance in the banks. All the bank sections can be monitored from a single room using webcams. In banks, the surveillance feed is directly connected to the main servers, and the video recording can be accessed to investigate in the future. It helps to keep a check on suspicious activities. The user can alert the whole bank in case of any suspicious activity. 

Video Calling: This is the most common use of webcams. The webcam can be attached to any system to perform video calls across the globe. The user can share the live video using webcams. The webcam enables the user to share his/her video while performing a call. This feature was especially useful during the pandemic as a real meeting was impossible. The users were able to communicate from their houses and organize meetings to perform the tasks. It enabled various organizations to conduct proctored examinations.

Robotic technology: Webcams make sixth-generation computers and artificially intelligent robots. Certain situations are too dangerous to be resolved by a person. In such places, we use robots that can be handled using remotes. The robot's view is recorded using webcams displayed on the screen of the user. The data that is recorded is sent to the main server. The user can accordingly operate the robots.

Home Security Systems: The webcams can be installed in households. They are an important part of the home security systems. The user can monitor from anywhere. They can install the webcam at the entrance of the houses to keep a check on the gate and surroundings. Expensive home security systems have webcams from which the user can detect the motion at night. The user can activate this home when not at home; the alarm will ring if any motion is detected.

Input and Output Devices: Certain I/O devices require webcams to control various applications and games. They can be used to stream live on YouTube. In certain applications, webcams are used to track the movement of objects. They can be used to determine the object, shape, and colors. They are used to make gadgets for the blind that can tell the person what lies ahead of them to avoid accidents.

Roads and Parking Area: Aside from security, the webcams are also attached to the back of the car to provide a clear view to the driver without actually seeing back. They can be used to detect traffic situations. The webcams are installed on the roads for surveillance. They are attached to the traffic lights in case of any violation of the traffic rules; they capture the offender's photo, and by using various algorithms, they can identify the number plate of the vehicle.

Working of a Webcam

  • The working of a webcam is somewhat similar to that of a digital camera. It is a peripheral device that can be connected to your system. It enables the user to click images or record videos. Still, this camera allows the user to connect to the system and facilitates communication with the internet. The feed from this camera can be directly shared to the internet, which was not possible in the case of the handheld digital camera. The user can broadcast live videos or photos over the internet using a webcam. It uses a grid of light decoders responsible for converting the captured image or video into a digital signal that the computer can directly access using the software. This grid is called a charge-coupled device.
  • There is no storage available in the webcam; therefore, it cannot store images and video files in the webcam. Thus, the images clicked using a webcam are directly transmitted to the device through USB. 
  • Any standard webcam performs two functions:
  • The primary function of the webcam is to capture photos or record videos.
  • The secondary function is to transmit these photos and videos to the device it is connected to.
  • The webcam interacts with the system by using the dedicated software required by the webcam to communicate and transmit the data to the system.
  • The software can provide additional features to the user, such as enabling the user to edit the images. The user can also set a duration for the video to be recorded. It ensures that the photos clicked by the webcam are converted into digital data and sent to the system after every fixed interval of time. It is the responsibility of the software to convert those digital signals back into a JPEG file. Finally, the image file is transmitted over the internet. The software uses the file transfer protocol to transfer the image or video files to a web page. To upload the captured photos or videos, the user must perform certain configurations manually before using the webcam.

History of the Webcam

Though the webcam is most commonly used for communication between two-person people, the device was not designed for this purpose only. It went through various development stages. The stages are:


Researchers at Cambridge University developed the webcam. The research objective was to find a way to remotely monitor the coffee pot. They then developed a webcam to monitor the pot from a remote location. They began by training a digital camera and attached the system with the computer. They could see the live feed from the camera in the system. They used specialized software to view the images from the camera in the system.


Once they could capture the image from the camera and view it on the system, they upgraded it by updating the images captured on the internet. The first webcam was developed in the process. They also developed a protocol that allowed the user to make a remote procedure call. The procedure for performing the call was known as MSRPC2. This protocol was developed over a multi-service network layer protocol. They are implemented in various devices such as ATMs. The researchers at Cambridge University implemented this protocol along with the system video capture board. This enabled them to remotely monitor the coffee pot by viewing the feed on the web. The webcam developed was able to upload one frame per sec. 


The webcam developed by the researchers at Cambridge University they were designed for research. The model enabled them to remotely view the coffee put but that was not developed to use by the public as the design was very crude and the development cost was very high. Connectix Corporation developed the first commercial version of the webcam. Connectix launched the first webcam in 1994, and it approximately cost $99. 

The First Webcam was Coffee, developed by a team of researchers at Cambridge University to observe the coffee pot. It was built to ensure and observe that the people did not waste too much time consuming the coffee. The utility of the webcam increased in 1993 as it was connected to the internet. As soon as the news spread about the webcam, more than 150,000 people came online just to watch the live stream of the coffee pot.