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| Word |
Explanation |
| Jabber |
In networking world, Jabber means a faulty device (usually a NIC ) continuously transmits corrupted or meaningless data onto a network. This may cause denial of service of the entire network from transmitting data beacuse other devices will perceive the network as busy. Jabber may also means sending data packet greater than the maximum 1518 bytes as specified in IEEE 802.3. To prevent this, jabber control should be added to the hardware. Jabber is also the name of an open, XML-based protocol for instant messaging and presence. Jabber-based software is deployed on thousands of servers across the Internet.
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| JavaStation |
The JavaStation NC is a network computers built and sold by Sun Microsystems during 1998 - 2000. It was the marketed successor to the Xterminal 1 and is succeeeded by the SunRay, although all three machines are fundamentally different. The JavaStation hardware ran Sun's own JavaOS and either Sun's Hotjava web browser, Sun's HotJava Viewstask-manager software, or custom Javaapplications of the customer's choice. JavaStation is a thin client -- a product relying on a network server for much of its processing .
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| Jitter |
In terms of monitor, jitter means jumping or instability in the screen picture. Jittering of monitors are caused by hardware problems such as a slow refresh rate, a bad connection between the video adapter and monitor, a hardware malfunction in the monitor, or poor synchronization in the signals being sent; or a higher-than-usual local magnetic field level caused by nearby devices. In terms of network communication, jitter indicates the change in latency with time. This is a network problem that is very important to real time communications such as video and VOIP.
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| Joystick |
A joystick is a computer peripheral or general control device consisting of a handheld stick that pivots about one end and transmits its angle in two or three dimensions to a computer. Most joysticks are two-dimensional, having two axes of movement, just like a mouse, but three-dimensional joysticks do exist. Joystick can move in all directions and controls the movement of a pointer or some other display symbol on a screen.
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| Jukebox |
The traditional jukebox is a partially automated music-playing device, usually a coin-operated machine, that can play specially selected songs from self-contained media. The traditional jukebox is rather large with a rounded top and has colored lighting going up the front of the machine on its vertical sides. Inthe computer world, a jukebox can store numerous CD-ROMs and uses a mechanical arm, carousel or other device to bring the disk to an optical station for reading and writing. A jukebox can reside in a PC or be an external device.
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| Junction Transistor |
Junction transistors are made by growing P- and N-type material together on a single substrate. The junctions between the semiconductor sections cause an incoming weak electrical signal to be amplified.
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