Abstract: The television sound volume to be achieved when a television is turned on by an on-time reservation function is preset into the system along with presetting the on-time of the television. The setting is accomplished using arrow keys and viewing an on-time reservation means on the television screen.

Abstract: A channel selector used in a television set, video cassette recorder and the like includes a key pad having tens key corresponding to the decimal numbers zero through nine. A microcomputer is also included therein, which is operated in response to the key pad output and controls on screen display circuit, a tuning voltage generator. A desired channel number is easily selected by the microcomputer which is operated by the program therein. As a result, a user may operate easily and quickly the channel selector without feeling a tedium due to a delay time between the activation of a first key and the activation of a second key.