An electronic apparatus includes a delay circuit which generates a delayed output signal to initial-clear the memory elements and a detection circuit for detecting a startup which operates at an operating voltage greater than the absolute value of any of the operating voltages of the memory elements. The output signal from the delay circuit is released on the basis of the output from the detection circuit. A reset circuit of this type obviates the need for a system reset key and thereby eliminates the disadvantages associated with such a key.