how can chanel change by verbly by equation of consumer?

when a tv is tune and itgetspicture from tv underconstruction of tuner bychangingchannels it means chanelschange due to transform of tuner then how to use tuner according to subscription of tuner by changing the vebabilty according to consumer if you change the chaner verbally due to recording habit of tuner suppose channel 1to200 by defination of chanel changerof equity i do in the favour of consumer by defining the equation of chanel of consumerby locating of chanel of equation of chanel