Question

(Logic Circuits) An alarm system for an electric heater.

Specification:

Temp (T) is 0 when temp is normal and 1 when temp is exceeded.

Pressure (P) is 0 when normal and 1 when exceeded.

Electricity (E) is 0 when off and 1 when the electric heater is on.

Valve (V) is 0 when the valve is closed and 1 when open.

Conditions to be met:

The alarm will output 1 (TRUE) when:

T is 1 and E is 1

P is 1 and E is 1

P is 1 and V is 0

Questions:

1) Devise a logic expression for the state of the alarm. Draw the circuit using the necessary gates.

2) Use Boolean Algebra to simplify this expression, and redraw it only using NAND gates.

Answer 1

please give positive rating.....