The ratio of the inertia force to the viscous force is called Reynold’s Number. The flow in a pipe is laminar when Reynold’s number is less than 2000 and flow is turbulent when Reynold’s number is more than 2800. But when Reynold’s number is between 2000 and 2800, the flow is neither laminar nor turbulent.

The pieces of equipment which are attached to the CPU of a computer and which it can access are called peripherals. A peripheral device is defined as a computer device, such as a keyboard or printer, that is not part of the essential computer (i.e., the memory and microprocessor). These auxiliary devices are intended to be connected to the computer and used.

Motherboard. The motherboard is the main component of a computer. It is a board with integrated circuitry that connects the other parts of the computer including the CPU, the RAM, the disk drives (CD, DVD, hard disk, or any others) as well as any peripherals connected via the ports or the expansion slots.