Cases of word usage

1) a flat panel for the controls of electronic or mechanical equipment (console)

2) the scientific study of electronic and mechanical instruments (especially compared to natural or biological systems) (cybernetics)

3) a small mechanical apparatus for a particular practical use (gadget)

4) metal goods for domestic use, e.g. pots and pans; mechanical equipment in a computer system e.g. the central processing unit, visual display unit etc (hardware)

5) an appliance or mechanical devise with parts working together, often using electricity (machine)

6) a person with a practical, mechanical or industrial skill (technician)

7) of, concerning, a practical, mechanical or industrial skill (technical)

8) a mechanical device used for controlling the flow of air, liquid, gas etc in one direction only; a structure in the heart or in a blood-vessel allowing the blood to flow in one direction only; a closed, airless tube used to control electricity (now replaced with transistors) (valve)