74ls 160 is used as a timer, and ne555 generates 20hz square wave input. Only the 14 pin has 10hz, indicating that the input signal is input and the output of the 14 pin is correct. Pins 13, 12, 1 1 have no output. I don't know if your chip reset is terminated correctly. The input of 74LS 160 is very sensitive. If it is on or off, the input will be burr, which will cause false jump. It's better to switch it with Schmidt shaping. It is best to use monostable shaping.