A supercomputer is a type of computer that is designed to solve complex computational problems that are beyond the capabilities of conventional computers. These machines are typically used for scientific and engineering applications requiring massive processing power.

Supercomputers are designed to perform many calculations in parallel, allowing them to solve problems much faster than conventional computers. They are typically composed of thousands of processors that work together to coordinate calculations.

Supercomputers are used for various applications, including weather forecasting, climate modelling, drug discovery, and astrophysics simulations. They are also used for military and defence applications, simulating nuclear explosions and designing advanced weapons systems.

Supercomputers are typically very expensive to build and maintain, and they require specialized expertise to operate. However, they are essential for solving some of society's most challenging problems. They are likely to become even more important as computational power increases.