A type of antivirus program that actively scans your computer system for viruses only when prompted to do so by the computer user, or by scheduling it as a time-specific task. On-demand scanners, while used to scan hard drives can also be used to check removable storage devices before copying from those devices onto your system. Contrast with on-access scanner.
- on-board modem
Another term for an internal modem; that is, a modem that comes as an expansion board you can insert into a computer.
- on-demand software delivery
A type of software delivery service where the software is provided to the customer through a network (such as the Internet) as a service. On-demand software delivery is also called software on-demand. The terms on-demand software and Software as a Service (SaaS) are often used interchangeably.
Alternative spelling of online
- On-Page Optimization
In search engine optimization, on-page optimization refers to factors that have an effect on your Web site or Web page listing in natural search results. These factors are controlled by you or by coding on your page. Examples of on-page optimization include actual HTML code, meta tags, keyword placement and keyword density. Contrast with off-page […]
- one-way hash function
An algorithm that turns messages or text into a fixed string of digits, usually for security or data management purposes. The “one way” means that it’s nearly impossible to derive the original text from the string. A one-way hash function is used to create digital signatures, which in turn identify and authenticate the sender and […]