1. A VCR comprising: receiving means for receiving a current time signal of radio wave from a broadcasting station and for demodulating the received current time signal; wave-shaping means for converting the demodulated current time signal from said receiving means to a digital signal and for outputting a resultant current time data; tuning means for receiving audio and video signals of radio wave from the broadcasting station and for tuning the received audio and video signals to a reference frequency; means for recording and playing back the audio and video signals and the current time signal from the broadcasting station; control means for controlling the operation of the VCR, for determining logic states of the digital signal from said wave-shaping means in accordance with a duty cycle of the digital signal and for converting the current time data to the current time in accordance with the determined logic states; on-screen display means for superimposing the current time on the video signal from said tuning means under control by said control means and for outputting a resultant signal to one of said recording and playing back means and an external display means; character display means for displaying the current time from said control means; and key matrix means for applying function signals to said control means according to a user's selection.