Data acquisition is an interface that uses a device to collect data from outside the system and input it into the system. Data acquisition technology is widely used in various fields. For example, cameras and microphones are all data collection tools. The collected data are various physical quantities that have been converted into electrical signals, such as temperature, water level, wind speed, pressure, etc., which can be analog or digital. The data acquisition is generally a sampling method, that is, the data of the same point is repeatedly collected at a certain time interval (called a sampling period).

