The high speed of digital computers has made it possible to have an efficient method of manipulating and altering stored data. Computer networks make it possible for computers to communicate with each other, and share or retrieve stored data. As a result information systems based on these computers can carry out various tasks. Electronic information systems are fairly new coming in at the mid- 20 th century. Their development is due to the impact of advances in integrated circuits and digital communications.
Integrated circuits are silicon chips containing transistors that store and process information.
The microprocessor chip also is progressing, but not in containing information but in speed, to support several thousand users in a computing environment. This increases the ranges of media, functions, and capabilities of information systems which cause them to be constantly expanding. Computer visualization converts masses of data from instruments, databases, or computer simulations into visual displays. Visual displays are an efficient method of human information reception, analysis, and exchange. Another area in digital communications that is related to visual displays is virtual reality.