Software-free low-temperature-resistant timing timer

The invention relates to a timer, in particular to a software-free low-temperature-resistant timing timer which comprises a chip U5 with the model of CD4060, chips U2, U3 and U4 with the model of 74HC192, a chip U1 with the model of 74HC00, a crystal oscillator circuit and a low-temperature-resistant battery, the low-temperature-resistant battery is used as a driving power supply, the crystal oscillator circuit is used for internal oscillation timing of the chips, the chip U5 is used as an overall timing chip, and the chip U1 is used as an overall timing chip. The three combined chips are used for frequency division timing of the oscillating circuit, and are finally designed and calculated to output voltage feedback for 5 minutes, the buzzer and the LED lamp are used for reminding that the timing time is in place, the reset button is used for resetting, the switch button is arranged on the power supply line of the driving power supply, and the internal circuit of the timer is arranged in the shell. The timer