The needs of your lab will help you identify the type of equipment that you will need to provide. You will also need to consider the purchase of printers, scanners, projectors, and internet modems/wireless routers. At least one printer and internet access are two essential items for the lab. Computer labs provide a time and space to develop skills not directly related to classroom curriculum. These skills can be first learned in the lab. Then mastered through ongoing application at home and in the classroom. Do not misbehave in the computer laboratory. Do not bring any food or drinks near the machine. Turn off the machine once you are done using it. Do not plug in external devices without scanning them for computer viruses. Contemporary computers can be categorized as mainframes, midrange computers, PCs, workstations, and supercomputers. Managers need to understand the capabilities of each of these types of computers, and why some types are more appropriate for certain processing work than others.