Quantum computing relies on principles of quantum mechanics and uses quantum bits that can represent both 1s and 0s simultaneously. This allows vastly more information processing than classical bits. Key concepts include Schrodinger's equation, spin, and quantum entanglement where measuring one particle instantly affects another particle even at a distance. Potential applications include developing new drugs with less side effects, better weather prediction, and problems too complex for classical computers. However, regular computers will still be needed for most tasks that use linear equations rather than exploring all scenarios.