Explain the types of logic systems used in digital electronics.

(N/A) There are two types of systems used in logic circuits:
$(1)$ Positive logic system: In this type of system,the higher voltage level is assigned as logic $'1'$ (high) and the lower voltage level is assigned as logic $'0'$ (low).
$(2)$ Negative logic system: In this type of system,the lower voltage level is assigned as logic $'1'$ (high) and the higher voltage level is assigned as logic $'0'$ (low).