Computers are programmable electronic devices that accept data, execute prerecorded instructions, perform mathematical and logical operations, and output results.
Hard drives are integral, non-volatile, electronic data storage units inside computers. Traditionally, hard drives were hard-wired into computers. Removeable hard disks and drives are also available.
Kiosks and point of sale (POS) systems are used for sale processing and inventory tracking. Examples include electronic cash registers, computerized check-out systems and self-serve kiosks.
