Hardware, software, and brainware.
Haller
K B
KB
D003194:Computer-Assisted Instruction / Q000379:methods* / Q000639:trends; D005544:Forecasting; D006801:Humans; D009732:Nursing Care / Q000379:methods* / Q000639:trends; D010353:Patient Education as Topic / Q000379:methods* / Q000639:trends; D013685:Telecommunications / Q000639:trends