An all electronic type timepiece is disclosed which comprises a customary or usual display for displaying time, a calendar, a.m., p.m., colon and other functions. An additional display element is provided separately from the customary display or alternatively is constructed as a part thereof for displaying the operating condition of a time counter circuit even when the customary display is extinguished.
Data input through a key switch is displayed on a liquid crystal display and is stored in an EEPROM. The data stored in the EEPROM is immediately read out to check whether the read data coincide with the input data. If the data stored in the EEPROM and read out therefrom does not coincide with the input data, the input data is stored again. If the input data cannot be stored in the EEPROM after storage operation is performed a predetermined number of times, a CPU determines, on the basis of a signal from a battery voltage detecting circuit, whether a voltage applied from a power supply circuit to the EEPROM exceeds a predetermined voltage. On the basis of this determination result, the CPU causes the liquid crystal display to display a cause for the disabled storage operation with respect to the EEPROM.
An electronic timepiece with an animated display is provided. The animated display includes flickering display elements for providing the animation. The timepiece includes a timekeeping circuit for generating actual time signals in at least hours and minutes and a corresponding time display region for displaying time in response to the time signals generated by the timekeeping circuit. The flickering animated display elements are driven independently of the timekeeping display. A digital display timepiece may include the animated display elements within a picture pattern. In this case, the flickering display elements form a part of the pattern. In a liquid crystal display timepiece, the flickering display elements may comprise portions of segments of display terminals and may be driven in response to seconds signals generated by a seconds counter of the timekeeping circuit.
In a combination of an electronic timepiece and an electronic calculator including a power source, a time keeping circuit, a calculation circuit, a keyboard unit for introducing information into the calculation circuit, and a display unit for displaying information stored in the time keeping circuit and the calculation circuit, a time period counter is provided for counting the time period when the electronic calculator is actually operated. The time period when the electronic calculator is actually operated is approximately proportional to the total power dissipation of the power source. The contents of the time period counter are displayed on the display unit for indicating the power dissipation of the power source.
