Analogue to digital converters; apparatus for converting digital values into graphic information; apparatus for creating digital effects; apparatus for digital signal processing; apparatus for electronic digital processing; apparatus for processing digital data; apparatus for processing digital video signals; apparatus for recoding digitally stored pictures; apparatus for recording digital information; apparatus for the processing of digital information; apparatus for use in digital communication transmission; audio digital discs; computer programs stored in digital form; converters for digital signals; devices for converting image information to digital signals for computers; devices for producing digital reproductions; digital apparatus; digital audio players; digital audio signal processors; digital controllers; digital data receiving apparatus; digital data transmission apparatus; digital data transmitting apparatus; digital effects units; digital graphic scanners; digital image processors for the analysis of transparencies; digital image processors for the evaluation of transparencies; digital interactive video adaptors for use with computers; digital map making apparatus; digital measuring apparatus; digital measuring instruments; digital music (downloadable) from the Internet; digital music (downloadable) provided from MP3 web sites on the Internet; digital optical transmission apparatus; digital optical transmission instruments; digital printing cameras; digital signal processing apparatus; digital sound processors; digital telecommunications apparatus; digital telecommunications instruments; digital telephone sets; digital telephone switching apparatus; digital televisions; digital video adaptors for displaying text with video pictures; digital video adaptors for use with computers; digital video apparatus for broadcasting; digital video apparatus for professional television use; digital video equipment for studio use; digital vision mixers; digitally stored images; digitally stored photographs; electric apparatus for the exchange of digital signals; electric apparatus for the transmission of digital signals; electrical digital control apparatus; electronic digital switching apparatus; electronic digital telephone exchangers; electronic instruments for receiving facsimile messages in a digital format; electronic instruments for transmitting facsimile messages in digital format; electronic weighing machines incorporating digital displays; integrated service digital network installations; integrated services digital network components; magnetic tapes for carrying digital information; mechanical digital display apparatus; personal digital assistants (PDAs); portable digital electronic scales; process control digital controllers; programmable digital read-out units; radio apparatus incorporating digital clocks; radios incorporating clocks with light emitting diode digital displays; recording discs in digital form; recording materials for the storage of digital computer programs; self-synchronizing digital encryptors; set-top boxes (digital signal receivers); simulation software for use in digital computers; telecommunications apparatus for use with digital signals; telecommunications digital exchange apparatus; telephone digital switching transmission apparatus; televisions incorporating clocks with light emitting diode digital displays; time dividers for digital communication apparatus; voice apparatus for digital network apparatus