Which is the main function of the respiratory system? a. To protect the body from illness.
b. To push blood to all parts of the body
c. To protect the internal organs
d. To help oxygen get into blood vessels

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.