Moore's law will soon reach the end of its validity, and as at that time, we will need a new form of computation which is Quantum Computing (QC). For 50 years now, computers have undergone miniaturization and are more powerful. Despite these advances, many problems are still unsolvable by classical computers and there is no assurance it will be solved. Quantum computing uses quantum mechanics principles like superposition and entanglement to solve computational problems. Exploring different aspects of Quantum Mechanics (QM) in physics is a requirement to know how the system works. In theory, unsolvable problems on conventional computers could be done by quantum computers. This paper investigates the concept, features and workability of quantum computers using literature search.