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  2. Restriction of Hazardous Substances Directive - Wikipedia

    en.wikipedia.org/wiki/Restriction_of_Hazardous...

    Replaced by. Directive 2011/65/EU, 3 January 2013 [1] Recast with new legislation. The Restriction of Hazardous Substances Directive 2002/95/EC ( RoHS 1 ), short for Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment, was adopted in February 2003 by the European Union.

  3. Wireless security camera - Wikipedia

    en.wikipedia.org/wiki/Wireless_security_camera

    Wireless security cameras are closed-circuit television (CCTV) cameras that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio. However, some wireless security cameras are battery-powered ...

  4. Tax deduction at source - Wikipedia

    en.wikipedia.org/wiki/Tax_deduction_at_source

    Tax deduction at source (TDS) is an Indian withholding tax that is a means of collecting tax on income, dividends, or asset sales by requiring the payer (or legal intermediary) to deduct tax due before paying the balance to the payee (and the tax to the revenue authority). Under the Indian Income Tax Act of 1961, income tax must be deducted at ...

  5. Broadcast television systems - Wikipedia

    en.wikipedia.org/wiki/Broadcast_television_systems

    Broadcasttelevision systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals. Analog television systems were standardized by the International Telecommunication Union (ITU) in 1961, [1] with each system designated by a letter ...

  6. Cable television - Wikipedia

    en.wikipedia.org/wiki/Cable_television

    Cable television. A set-top box, an electronic device which cable subscribers use to connect the cable signal to their television sets. Presented unit is a Cisco RNG200N for QAM digital cable television system used in North America. Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals ...

  7. Digital television - Wikipedia

    en.wikipedia.org/wiki/Digital_television

    Digital television ( DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advancement and represented the first significant evolution in television technology since color television ...

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