1, manual stage: in the era of no machine, people can only manually collect and process data, this stage mainly relies on manual records and word of mouth.

2, mechanical stage: with the invention and widespread use of machines, people began to use typewriters, calculators and other mechanical devices to manage and process data, this stage relies mainly on manual input and processing with the assistance of machines.

3, electronic stage: with the rise of electronic computers, data began to be stored, processed and transmitted electronically, this stage relies mainly on computer technology for data acquisition, storage, processing and management.

4, networked stage: with the popularity of the Internet, data began to enjoy and exchange on a global scale ****, this stage relies mainly on network technology to achieve data **** enjoyment and interaction.

5, big data era: with the continuous improvement of computing power, storage capacity, transmission capacity, the data scale continues to increase, the data types continue to enrich, this stage mainly rely on big data technology to analyze and utilize the huge data resources, mining the value behind the data.