Abstract: A television having program recording and playback functions includes a screen, a storage unit, a sensor and a processor. The television determines whether the person is absent in front of the screen during displaying the television program and, if so, records the television program and corresponding channel information, and then determines whether a person is present in front of the screen again after the person is absent in front of the screen and, if so, controls the screen to display a menu. The television reads the recorded channel information to tune to a corresponding channel when a first option of the menu is selected, and reads the recorded television program to display the recorded television program by the screen when a second option of the menu is selected.

Abstract: A display device having a watch-time reminding function includes an input unit, a display unit, a sound output unit and a control unit. A user can use the input unit to set a health watch time or turn on or off the watch-time reminding function. After the watch-time reminding function is turned on, the control unit counts a current watch time and compares the current watch time with the health watch time. When the current watch time reaches the health watch time, the control unit judges that the user spends too much time watching the display device. Accordingly, the control unit controls the display unit to display a reminding image and controls the sound output unit to output a reminding sound so as to remind the user to take a rest or do eye exercise to prevent nearsightedness.