What exactly does the IT industry do?

IT main occupation includes:

Software category: system analyst, computer programmer, software tester, software project management division, system architect.

hardware category: computer maintenance.

network category: network engineer, network system designer, network integrated wiring engineer and network construction engineer.

information system category: computer operator, information system security engineer, information system administrator, database system administrator, information system supervisor, information system evaluator, information resource development and management personnel and information system designer.

manufacturing category: semiconductor device tester, semiconductor device manufacturing technician, semiconductor device manufacturer, semiconductor device support worker and semiconductor device packaging worker.

Supplement:

IT industry covers a wide range, including information technology industries, such as banking, consulting, hospitals, publishing, manufacturing, film and television, etc. * * * is characterized by its dependence on information and information systems. Computer software and hardware, Internet and other various network environments to connect all the above things, and of course, people engaged in design, maintenance, support and management have formed an ubiquitous IT industry.