1. Computer        

1. A computer is a machine that manipulates data according to a list of various forms is icons of information. It has the ability to store and execute lists of instructions called programs. Computers are electronic and digital. The actual machinery wires, transistors, and circuits are called hardware. The instructions and data are called software.

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3. http://en.wikipedia.org/wiki/Computer

4. I use my computer daily. It is my workstation that makes my job as a librarian much easier. It can perform hundreds of millions of instructions per second. It is used for entering data, a monitor for displaying information, and a storage device for saving data for my users.

2. USB Drives

1. USB flash drives offer potential advantages over other portable storage devices, particularly the floppy disk. They have a more compact shape, operate faster, hold much more data, have a more durable design, and operate more reliably due to their lack of moving parts.

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3. http://en.wikipedia.org/wiki/USB_Flash_Drive

4.  It is essential because it transport and store personal files such as documents, pictures and videos.  Also, my work is stored for use in emergencies and for disaster preparation.

3.  Television

1. Television (TV) is a widely used telecommunication medium for transmitting and receiving moving images, either monochromatic ("black and white") or color, usually accompanied by sound. "Television" may also refer specifically to a television set, television programming or television transmission.

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3. http://en.wikipedia.org/wiki/Television

4. The essential use of the television set has become a common communications receiver in the library, particularly as a source of entertainment, current events, and news update activity.

4.  Global Translator Franklin TGA-490 Global Translator

1.  The Global Translator contains over 450,000 words and 12,000 phrases, and speaks 115,000 words in recorded human voice. Translations to and from Chinese, Dutch, English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian and Spanish. Enter a word in your native language and this indispensable travel tool will speak and show the translation in your language and the language you seek.

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3.www.ecost.com/detail.aspx?edp=38663483&printView=true

4. The piece of equipment would be great for communication.  It would be an asset to teachers with non-English speaking students and the same for other.

5. Laptops 1. A laptop (also known as a notebook) is a personal computer designed for mobile use small enough to sit on one's lap. It is a portable computer that can be used in many places, not only at home and at the office, but also during commuting and flights, in coffee shops, in lecture halls and libraries, at clients' location or at a meeting room, etc.

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3.  http://en.wikipedia.org/wiki/laptop

4. Essential used as a librarian, it gives me instant access to various information while deleting or getting information on books in the library. It is a wireless networks and cellular broadband data services combined with a near-ubiquitous support by laptops that means it can have easy Internet and local network connectivity while remaining mobile.

6. Overhead Projector

1. An overhead projector is a large box with a bright lamp and a fan to cool it on top and  a large lens that collimates the light. Above, on a long arm, is a mirror and lens that focuses and redirects the light forward instead of up. Transparencies are placed on top of the lens for display. The light from the lamp travels through the transparency and into the mirror where it is shone forward onto a screen for display. The mirror allows both the presenter and the audience to see the image at the same time, the presenter looking down at the transparency as if writing, the audience looking forward at the screen.

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3. http://en.wikipedia.org/wiki/Overhead_Projector

4. The overhead is essential to facilitate a easy low-cost tool for the library. My teaching materials can be pre-printed on plastic sheets, or I can directly write using a non-permanent, washable color marking pen for daily lessons. This saves time, since the transparency can be pre-printed and used repetitively, rather than having materials written manually before each class.

7.Digital Camera

1. A digital camera (or digicam for short) is a camera that takes video or still photographs, or both, digitally by recording images via an electronic image sensor. It can record sound and moving video as well as still photographs. In the Western market, digital cameras outsell their 35 mm film counterparts.

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3. http://en.wikipedia.org/wiki/Digital_camera

4. Digital cameras are essential to me because they can do things film cameras cannot. I like to using them to display images on a screen immediately after they are recorded so you can see the big picture and personality images. Also, it is great for show and tell for my students. It is great for storing images on a single small memory device, recording video with sound, and deleting images to free storage space in the library.

8. Projector Screen

1. Projector screens are available in multiple, specialized projection materials designed to enhance video quality for home theater, training room, boardroom, or auditorium. Choose from fixed, electric, wall-mounted, portable and tripod styles that are made for front projection or rear projection applications.

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3. www.projectorcentral.com/screen-suppliers.htm

4. Projector screens are essential to me because it helps you easily be able to have images you can offer on the big screen. This is a great concept for business meetings, classroom presentations, and any other formats where you want to be able to share materials. Even if you decide to hand out materials for the audience to view it is nice to have a visual in front of the group that you can present.

9. DVD Player 

1. A DVD player is a device that plays discs produced under both the DVD Video and DVD Audio technical standards, two different and incompatible standards.

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3. http://en.wikipedia.org/wiki/DVD_player   

4. The DVD Player is essential to me because I can show a movie that relates to a book as a hands-on activity for my reading class.

10.  AV Cables

1. Standard multi connector for connecting audio-visual equipment together.

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. http://www.av-cables.net/

4. They are essentially used every day to connect the computers, internet, DVDs, VCRs, etc.

11. Mouse

1.  The Mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface.

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3. http://en.wikipedia.org/wiki/Mouse_(device)

4. The Mouse is essential because it is my computer navigator.

12. Webcam

1. Webcams are video capturing devices connected to computers or computer networks, often using USB or, if they connect to networks, or Wi-Fi. They are well-known for their low manufacturing costs and flexible applications.

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3. http://en.wikipedia.org/wiki/Webcam

4. Personally, I would like to have this type of technology in the library. It would be essential for my users on virtual field trips.

13. electronic typewriter

1. A typewriter is a mechanical or electromechanical device with a set of "keys" that, when pressed, cause characters to be printed on a medium, usually paper.

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3. http://en.wikipedia.org/wiki/Electric_typewriter

4. A typewriter is essential tool because it acts as a back-up for printing tool. I personally use it to complete my library purchase orders.

14. Printer/Fax/Phone 1. Economically print, copy, fax and scan with just one machine. It performs most of your important office tasks, printing, copying, faxing and scanning, with a built-in phone too!

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3. http://www.nextag.com

4. I think the All-in-one eliminates the need to buy and maintain separate machines, cutting your costs and reducing clutter. 

15. Copy Machine

1. A copy machine (or copier) is a machine that makes paper copies of documents and other visual images quickly and cheaply. Most current photocopiers use a technology called xerography, a dry process using heat.

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3. http://en.wikipedia.org/wiki/Copy_machine

4. It is essential to me because I need printed handouts for my users daily.

16. Tape Recorder

1. An important use of tape recorders is the recording. Video cassette recorders differ substantially from audio recorders due to the use of a rotating magnetic head that uses a helical scan over the tape medium. Helical scans increase the relative speed of the tape surface over the head.While they are primarily used for sound recording, tape machines were also important for data storage before the advent of floppy disks and CDs.

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3. http://upload.wikimedia.org

4. Tape Recorders are essentially used today, although primarily to provide an offline backup to hard disk drives. Personally, I use the tape recorder for spelling bees, and special needs class activities.

17. Scanner

1. Image scanner converts to a digital image. Common examples found in offices are variations of the desktop (or flatbed). Scanners can be considered the successors of early telephotography input devices,  where the document is placed on a glass window for scanning and making picture images.

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3.http://Wikipedia.org/wiki/File:Image_Scanner.JPG

4. My essential uses are for creating copies, pictures, faxing, etc.

18. Calculator

1.  A calculator is a device for performing mathematical calculations, distinguished from a computer by having a limited problem solving ability and an interface optimized for interactive calculation rather than programming.

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3. http://wikipedia.org/wiki/Calculator

4. Calculators are essentially used as  hardware or software, and mechanical or electronic, and are often built into devices such as PDAs or mobile phones. They are used each in schools for math classes. I personally use one for averaging grades.

19. Blank CD

1.  The blank disc has a very fine groove that forms a large spiral, starting from the centre of the disc and finishing on the edge. Visible to the laser at the bottom of this groove is a layer of organic dye. During the recording process the laser switches to a higher power and 'burns' a mark in the dye. These marks in the dye are like the pits found on CD-ROM discs, and can be read by the laser operating at a lower power.

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3. http://www.discmaker.

4. The blank CD are essentially used for saving information of songs, audio, and printed materials.

20. Headphones

1. Headphones are a pair of small loudspeakers, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a signal source such as an audio amplifier, radio or CD player. They are also known as earphones, earbuds, stereophones, headsets or, informally cans.

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3. http://wikipedia.org/wiki/Headphones

4. They are essentially used In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two-way communication, listening centers, and for students with special needs.