Introduction - If you have any usage issues, please Google them yourself
LC5620 is TI s DA converter chip, simple DA conversion function following code to achieve. Description: a digital display channel, digital tube display RNG value 2, 3 and 4 digital tube display CODE value. Press 1 to switch channels, press 2 to change the RNG value (0 or 1), the key three changes CODE value, key 4 is not used.