Automatic product counting device

The utility model discloses an automatic product counting device, comprising a one-chip microcomputer, a travel switch or an approach switch connected with the one-chip microcomputer, and a memory. When a product on a production line touches the travel switch or passes by the approach switch, a signal is sent to the one-chip microcomputer for recording data of present batch and the data is then sent to the memory for storing. The one-chip microcomputer is connected with a display through a display driving module and the display shows the cumulative number of the present batch is a real-time manner. The one-chip microcomputer is connected with a keyboard through a keyboard control module so as to set a fixed batch quantity. A selecting button connected with the one-chip microcomputer can be used for selecting the fixed batch quantity corresponding to the type of the product on the present production line conveniently. The one-chip microcomputer is connected with an alarm through a pre-warning relay and when th