)(1) In programming languages, a single element of a programming language. For example, a token could be a keyword, an operator, or a punctuation mark.
(2) In networking, a token is a special series of bits that travels around a token-ring network. As the token circulates, computers attached to the network can capture it. The token acts like a ticket, enabling its owner to send a message across the network. There is only one token for each network, so there is no possibility that two computers will attempt to transmit messages at the same time.
(3) In security systems, a small device the size of a credit card that displays a constantly changing ID code. A user first enters a password and then the card displays an ID that can be used to log into a network. Typically, the IDs change every 5 minutes or so.
A similar mechanism for generating IDs is a smart card.
(4) Another word for USB flash drive.
- token passing
A type of CAM. Token passing uses a token, or series of bits, to grant a device permission to transmit over the network. Whichever device has the token can put data into the network. When its transmission is complete, the device passes the token along to the next device in the topology. System rules in […]
- Token-Ring Network
)(1) A type of computer network in which all the computers are arranged (schematically) in a circle. A token, which is a special bit pattern, travels around the circle. To send a message, a computer catches the token, attaches a message to it, and then lets it continue to travel around the network.
A special type of ink used by copy machines and laser printers. Toner consists of a dry, powdery substance that is electrically charged so that it adheres to a drum, plate, or piece of paper charged with the opposite polarity. For most laser printers, the toner comes in a cartridge that you insert into the […]
A program that performs a very specific task. Synonymous with utility. Similar to application.
A series of selectable buttons in a GUI that give the user an easy way to select desktop, application or Web browser functions. Toolbars are typically displayed as either a horizontal row or a vertical column around the edges of the GUI where they are visible while the application is in use. Most applications use […]