Desktop personal computers (PCs) are small, relatively inexpensive computers that are designed for individual users.

Towers, poles and support structures elevate, support and/or position personnel and equipment such as antennas, lighting, surveillance cameras or sensors, wind turbines, weather instruments, and power lines

Computers are programmable electronic devices that accept data, execute prerecorded instructions, perform mathematical and logical operations, and output results

Handheld computers are portable devices including notebook and subnotebook computers, palmtops, and PDAs

Industrial computers are similar to personal computers (PC), but they are intended for use on a factory floor or in other harsh environments

Single board computers (SBC) serve as the motherboard for instrumentation systems including modern PCs.

Cooling towers are defined as any open water recirculation device that uses fans or natural draft to draw or force air to contact and cool water by evaporation