Sequential Processing Parallel Processing: Type of processing in which more than one instruction can be processed at a time by breaking down a problem into smaller parts and processing them simultaneously with multiple processors.
Distributed processing: The distribution of computer processing work among multiple computers linked by a communications network.
Centralized processing: Processing that is accomplished by one large central computer.
Client/server computing: A model for computing that splits processing between "clients" and "servers" on a network, assigning functions to the machine most able to perform the function.
Client: The user point-of-entry for the required function in client server computing. Normally a desktop computer, workstation, or laptop computer.
Downsizing: The process of transferring applications from large computers to smaller ones.
Network computer (NC) Simplified desktop computer that does not store software programs or data permanently. Users download whatever software or data they need from a central computer over the Internet or an organization's own internal network.
Total cost of ownership (TCO) Designates the total cost of owning technology resources, including initial purchase costs, the cost of hardware and software upgrades, maintenance, technical support, and training.
Floppy disks: Removable magnetic disk storage primarily used with PCs.
5 1/4 inch (1.2 MB)
3 1/2 inch (1.44 MB)
RAID (Redundant Array of Inexpensive Disks) Disk storage technology to boost disk performance by packaging more than 100 smaller disk drives with a controller chip and specialized software in a single large unit to deliver data over multiple paths simultaneously.
Magnetic Disks Tracks Sectors Read/Write Head Access Arm
Source data automation: Input technology that captures data in computer-readable form at the time and place the data are created.
Optical character recognition (OCR): Form of source data automation in which optical scanning devices read specially designed data off source documents and translate the data into digital form for the computer.
Bar code: Form of OCR technology widely used in supermarkets and retail stores in which identification data are coded into a series of bars.
Magnetic ink character recognition (MICR): Input technology that translates characters written in magnetic ink into digital codes for processing.