Computers have become essential business tools. They are used in every aspect of a company's operations, including product creation, marketing, accounting and administration.
So what is POS? POS stands for point of sale. A point-of-sale (POS) transaction is what takes place between a merchant and a customer when a product or service is purchased, commonly using a point of sale system to complete the transaction.
UPS (Uninterpretable Power Supply) A device that provides battery backup when the electrical power fails or drops to an unacceptable voltage level. Small UPS systems provide power for a few minutes.