The invention provides a computing device and a board card, the computing device is used for executing a recurrent neural network operation, the board card comprises a storage device, an interface device, a control device and a neural network chip, and the neural network chip comprises a computing device and the storage device and is used for storing data; The interface device is used for realizing data transmission between the chip and external equipment; And the control device is used for monitoring the state of the chip. The computing device provided by the invention has the advantages of low cost and low power consumption.