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Thursday, June 2

  1. page Webcam edited {webcams440.jpg} (DansData, 2008). The basic idea of a Webcam is a digital camera connected to…
    {webcams440.jpg}
    (DansData, 2008).
    The basic idea of a Webcam is a digital camera connected to your computer through a USB port.
    Definition: Dictionary.com defines Webcam as, "a digital camera who images are transmitted, often in real time, over the World Wide Web." (Dictionary.com, 2011).
    Standard Specifications:
    Dedicated Webcams - most common types of webcams and only require a USB connection to the computer; low number of frames per second and low resolution
    Integrated Webcams - these webcams accompany the hardware; many laptops manufactured today have webcams built-in to the computer
    Camcorders/Security Cams - these cameras use video capture cards on a PC; come with variable lens options, night-time coverage, and filters for daylight
    Megapixel Cameras - excellent quality; create large files and thus are rarely used for streaming; used to capture still images over a consistent period of time; popular for refreshing archived images.
    (moneysupermarket.com, 2010).
    When you want to start shopping for Webcams it is important to keep in mind what you want to use the cam for. The video below shows the different types of webcams and the best to choose for laptops and PCs.
    (TigerDirectBlog, 2007).
    Function & How it Affects the End User: In order for a Webcam to function properly the computer user will need a camera that is somehow connected to your computer, a piece of software then can take frames and images from the camera periodically, and a way to broadcast those images on to the World Wide Web, for example MSN Messenger. (moneysupermarket.com, 2010). For personal webcam usage a webcam, software and a PC is all you will need for your Webcam to function properly. If you would like to use a Web Server then you will need the ability to move frames from the PC you are using to the Web Server, which typically uses FTP (File Transfer Protocol) and a consistent connection between your PC and the internet, (a cable modem is preferred over a dedicated phone line). (Layton, 2011). The function of a Webcam is to basically transfer image frames from the camera to the PC and then to the World Wide Web. The only encounter I have had with a webcam is the MSN Messenger Webcam function. When you have signed into MSN and are having a conversation with someone, you push the Webcam button and within seconds the image of you typing on your computer pops up on the screen.
    Fun Fact!: The first webcam was developed in 1991 and was pointed at the Trojan Room coffee pot at Cambridge University Computer Science Department. (Webcam, n.d.).
    Resources Utilized for this Page:
    DansData. (2008). Webcam Comparison: Logitech QuickCam Pro 3000, Logitech Quickcam Express, Lifeview Robocam [image]. Retrieved from http://www.dansdata.com/webcams.htm
    Dictionary.com. (2011). Webcam. Retrieved from http://dictionary.reference.com/browse/webcam
    moneysupermarket.com. (2010). Guide to Webcams. Retrieved from http://www.moneysupermarket.com/broadband/webcams/
    Layton, J. (2011). How Webcams Work. Retrieved from http://computer.howstuffworks.com/webcam.htm
    Webcam. (n.d.). In Wikipedia. Retrieved June 2, 2011 from http://en.wikipedia.org/wiki/Webcam
    TigerDirectBlog. (2007, August 27). Logitech Webcam Showcase [Video File]. Retrieved from http://www.youtube.com/watch?v=a-ZcWc8M47I

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  2. file webcams440.jpg uploaded
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  3. page Sound Card edited {soundcard.jpg} (dipti, 2011). Before Sound Cards were invented the computer could only use di…
    {soundcard.jpg}
    (dipti, 2011).
    Before Sound Cards were invented the computer could only use different frequencies and tones of beeping to convey warning and alerts. The earliest PC games had music strictly comprised of beeps. In the 1980s the add-on Sound Card was introduced for PCs and this greatly improved the range of sounds, volume and quality of sounds.
    Definition: "A hardware interface that is either built into a computer's motherboard or inserted into one of the computer's internal expansion slots. Sound cards allow the computer to play digital audio and/or musical instrument sounds." (Sonic Spot, 2007).
    Standard Specifications: There are four types of Sound Cards that are the most commonly used.
    Types of Sound Cards
    Description
    ISA Bus Cards
    oldest sound card for non plug and play ISA bus; likely not manufactured today
    ISA Plug and Play Cards
    use extended version of the ISA bus; supports software identification and configuration of cards in software;
    not very many of this type are manufactured today
    PCI Bus Cards
    use PCI bus that has a higher bandwith and provides identification and configuration of cards in software; majority of sound cards
    today use the PCI; onboard sound cards built-in to the motherboard also use the PCI
    USB
    new connection used for external "hot-pluggable" devices; used for USB bus speakers
    (Wilson, 1998-2011).
    {sound_card_2.jpg}
    (Computer-Hardware-Explained.com, 2007).
    Function: The Sound Card allows the computer to make 3D audio sound for games, music, and movies, and it can also record and playback sound from external sources. The Sound Card acts as a translator between the computer's digital, electronic information and messages and the outside world's analog information, or what the computer user hears. The Sound Card uses a device to convert sound from analog to digital, and from digital to analog. The card also comes equipped with and ISA or PCI Interface to connect to the motherboard and input and output connections for external speakers. The Sound Card uses its own memory in order to increase the processing speed. Some Sound Cards come equipped with so many input/output connections that they require a breakout box, which includes: multiple speaker connections for 3D and surround sound, a file transfer protocol for audio data (S/PDIF), MIDI used to connect electronic instruments to the computer, and Firewire and USB connections. (Wilson, 1998-2011).
    How It Affects the End User: The uses of computers have increased substantially and I can't think of one job that wouldn't require a computer with sound. Even this wikipage needs to be viewed on a computer that has a sound card because of the Videos provided. Without a sound card computer users wouldn't be able to watch movies, YouTube videos, listen to music, or play video games. Some computers come equipped with sound cards that are used for recording music and this wouldn't be possible without the sound card. Without a sound card, a computer would have restricted or limited use for the computer user.
    Fun Fact!: The very first sound card introduced into the market was the Sound Blaster card. (OPPapers.com, 2011).
    The video below demonstrates how to install a sound card.
    (BetaFlux, 2007).
    Resources Utilized for this Page:
    dipti. (2011). How Sound Card Works [image]. Retrieved from http://www.warepin.com/how-sound-card-works/
    Sonic Spot. (2007). Glossary: Sound Card. Retrieved from http://www.sonicspot.com/guide/glossary.html
    Wilson, T.V. (1998-2011). How Sound Cards Work. Retrieved from http://computer.howstuffworks.com/sound-card.htm
    Computer-Hardware-Explained.com. (2008). Computer Sound Card [image]. Retrieved from http://www.computer-hardware-explained.com/computer-sound-card.html
    OPPapers.com. (2011). History of the Sound Card. Retrieved from http://www.oppapers.com/essays/History-Sound-Card/49702
    BetaFlux. (2007, August 15). Sound Card Install [Video File]. Retrieved from http://www.youtube.com/watch?v=wp4TDe814WU

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  4. file sound_card_2.jpg uploaded
    12:52 pm

Wednesday, June 1

  1. page Sound Card edited {soundcard.jpg} (dipti, 2011).
    {soundcard.jpg}
    (dipti, 2011).

    (view changes)
    11:37 pm

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