home *** CD-ROM | disk | FTP | other *** search
/ Developer Source 18 / Developer Source Volume 18 (I-MODE Publications, Inc.)(2000).iso / netwk / 931 / steif202.gif < prev   
Graphics Interchange Format  |  1999-07-12  |  51KB  |  453x408  |  4-bit (16 colors)
Labels: text | yellow | screenshot | font | rectangle | poster | parallel | art
OCR: (a) Frequency shift keying (FSK) (b) Amplitude-shift keying (ASK) (e) Phase shift keying ( PSK) Figure 2. There are three possible basic techniques for modulating an analog signal with digital data. In practice, combinations of these methods are often employed.