Entertain me

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  • Created by: ZR1
  • Created on: 24-12-17 13:24
HDTV
High-definition TV.
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High definition (HD)
The picture on a TV screen is made of lines of pixels. In a conventional TV there are 625 lines, which are refreshed 25 times per second. HD has either 720 or 1080 lines, so it produces a clearer, sharper picture.
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HDMI (high-definition multimedia interface)
Required for connecting devices to show high-definition video.
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Features
A list of what a device includes, e.g. webcam, touch sensitive screen.
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Functions
A list of what the device’s features can do, e.g. Connect to a network. Most of the digital devices that people buy have far More functions than they need or use
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Hard disk drive (HDD) size
The laptops’ storage capacity which allows it to store MP3 audio files.
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Performance
Processor speed, e.g. 1.66 ghz, and size of ram (random access memory), e.g. 4 gb.
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Connectivity
The range of peripheral equipment the computer can connect to through its interfaces such as usb, hdmi, wifi, Bluetooth.
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Future proofing
Making sure the devices are latest so they don’t become out of date and unusable very quickly.
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Upgradability
The ability to upgrade and for it to be easy to happen.
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Support
This is to make sure that the owner is able to receive help from the company to set it up or repair it. Each company has their own policies. This includes insurance, or warranty.
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Blu-ray
A disk that enables the recording, rewriting and playback of high-definition video and the storing of large amounts of data.
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Download
Transfer of a file, e.g. a video, from a central computer to your computer.
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Broadband
A high-speed connection to the Internet.
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Bandwidth
The amount of data that can fit through an Internet connection. You can compare it to a ten-lane motorway which ca fit more cars on it than a four-lane motorway. Bandwidth is measured in (bps) bits per second.
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Upload
Transfer a file from your computer to a central computer, e.g. your ISP.
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Firewall
A system designed to prevent unauthorised access to your computer when connected to a network such as the Internet.
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Spyware
Software that can be installed on your computer without your knowledge, which collects information about your logins and passwords and sends details to another computer on the Internet.
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ADSL
An ADSL is a system used to run broadband over copper telephone lines.
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Speed
The speeds given are for downloading data and the speed for uploading will be much less.
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Download limits
Some ISP impose a limit on the amount of data that you can download in a month and will charge you if you go beyond this.
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Email and web space
The ISP should provide you with several email addresses and also an area on their server to create your own web pages.
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Security
When you have a broadband connection your computer is vulnerable to hackers from around the world, as the connection is always on. The ISP should provide you with a -firewall and also some anti-spam software.
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Parental control
Some ISP provide software to ¬filter out undesirable websites so that parents can restrict access.
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Reliability and customer service
Lots of users complain about their ISP, especially about speed and poor customer service. The best way to ¬find out about reliability is to ask friends about their experiences, look in magazines and check on forums and user sites.
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IP (Internet Protocol) address
The personal address of your computer (just like your home address), so that servers know where to send the information you have requested.
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Encryption
For security, data is translated into a secret code according to a set of rules in a special ‘key’. To convert the data back into plain text, the receiver must also have the key.
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Copyright
Gives the creator of an original work exclusive rights regarding that work for a certain period of time, including its publication, distribution and adaptation.
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Digital Rights Management (DRM)
Allows the copyright holder or the owner of the media control over the number of viewings, plays and copies, and even which devices the media can be played or viewed on. If you download then you cannot burn it on to a DVD as the DRM encoded in film.
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Streaming
content is sent in compressed form over the Internet and displayed by the viewer in real time.
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Malware
Software that is designed to cause problems for users.
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Cookies
Small text files that are sent to your computer from certain websites. They track your behaviour and transactions.
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Other cards in this set

Card 2

Front

The picture on a TV screen is made of lines of pixels. In a conventional TV there are 625 lines, which are refreshed 25 times per second. HD has either 720 or 1080 lines, so it produces a clearer, sharper picture.

Back

High definition (HD)

Card 3

Front

Required for connecting devices to show high-definition video.

Back

Preview of the back of card 3

Card 4

Front

A list of what a device includes, e.g. webcam, touch sensitive screen.

Back

Preview of the back of card 4

Card 5

Front

A list of what the device’s features can do, e.g. Connect to a network. Most of the digital devices that people buy have far More functions than they need or use

Back

Preview of the back of card 5
View more cards

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