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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TB
terabyte or 1000 gigabytes
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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. It has more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disk and 50GB
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Download
transfer of a file
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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. measured in bits per second (bps). indicates the number of bits of information that can fit down the line in one second. Kbs - 100s, Mbs - millions
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Upload
transfer a file from your computer to a central computer, e.g. your ISP
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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 a 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 owener 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 a film from iTunes, you cannot burn it on to a DVD because of t
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Streaming
content is sent in compressed from over the Internet and displayed by the viewer in real time. When streaming video, a web user does not have to wait to download a file to play it. Instead, the media is sent in a continuous stream of data and plays
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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 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
Card 4
Front
terabyte or 1000 gigabytes
Back
Card 5
Front
a disk that enables the recording, rewriting and playback of high-definition video and the storing of large amounts of data. It has more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disk and 50GB
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