Computers have become integral to pharmacy practice in many ways. They are used for drug and patient database management, order entry systems, dispensing medications, billing, purchasing, and more. Computers allow for the exchange of health information across geographic and time boundaries. In pharmacy education, computers are used for computer-aided learning, e-learning, digital libraries, and simulations. Pharmacy informatics is also an integral part of pharmacy education. Computers are crucial in areas like hospital and clinical pharmacy, pharmaceutical analysis, drug design, retail pharmacy functions, and more. Internet pharmacies allow patients to request and receive medications online.