Sub categories for technology:

Alternative technology
Appropriate technology
Assistive technology
Banking technology
Cyber Infrastructure
Cybernatics
Digital Technology
Drilling Technology
Drive by wireDisruptive technology
Domestic technology
Educational technology
Electronics
Emerging technology
Energy
Environmental technologies
Explosives
Film and video technology
Flavor technology
Geographical technology
Green energy design
High tech
Industrial technology
Information technology
Low-technology
Lubricants
Machinery
Media technology
Military technology
Mining techniques
Microtechnology
Music technology
Nanomanufacturing
Sound technology
Space technology
Telecommunication
Transportation
Travel technology
Vehicle technology
Waste treatment technology

Based from Wikipedia.