The Full Form of HSPICE is‍ Hewlett Simulation Program with Integrated Circuit.

Integrated circuits, unlike board-level designs composed of discrete parts, are impossible to breadboard before manufacture. Further, the high costs of photolithographic masks and other manufacturing prerequisites make it essential to design the circuit to be as close to perfect as possible before the integrated circuit is first built. Simulating the circuit with SPICE is the industry-standard way to verify circuit operation at the transistor level before committing to manufacturing an integrated circuit. For example, it will draw out circuits and simulate what happens when the circuits are powered up/ and behave under different emergency conditions.