jumper

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jumper

1. Engineering a boring tool that works by repeated impact, such as a steel bit in a hammer drill used in boring rock
2. Electronics a short length of wire used to make a connection, usually temporarily, between terminals or to bypass a component
3. a type of sled with a high crosspiece

jumper

[′jəm·pər]
(electricity)
A short length of conductor used to make a connection between two points or terminals in a circuit or to provide a path around a break in a circuit.

jumper

1. A short length of electric cable fitted with connectors at both ends, connected across a device in an electric circuit so that the current bypasses the device.
2. A steel bar which is moved up and down manually in a borehole in the ground; used as a drilling or boring tool.
3. In a stone wall, a stone that is two or more courses, 1 high.

jumper

(hardware)
A removable wire or small plug whose presence or absence is used to determine some aspect of hardware configuration.

jumper

A small, plastic-covered metal block that is pushed onto two pins to close a circuit. An alternative to the DIP switch, the jumper is a less costly on/off switch found on motherboards and peripheral devices for one-time configuration. Although jumpers exist on modern computers, especially on hard disk drives, they were more prevalent in the early days of personal computers. Configuration of the hardware via software eliminated the use of many jumpers. See DIP switch and jumperless.


Jumper
Jumpers are used to select options on printed circuit boards. The more sophisticated the board, the fewer the jumpers. Having no jumpers is best if changes have to be made by the user, otherwise the board has to be pulled out of the case.







Hard Drive Selection
Jumpers are used on IDE/ATA hard drives to select their operation mode, and schematics like this one are commonly found on the drive to show how to place the jumper on the pins. In "Single" mode, the jumper is not used.
References in classic literature ?
Part is my own, for I saw the jumper, though it was broken up and burnt in a day or two.
The current trend for Christmas jumpers began back in The current trend for Christmas jumpers began back in 2011 when Amazon reported a 600% increase in sales on the previous year
Using both her customers' own Fair Isle jumpers and fabric specially commissioned at her local textile college, Wendy's creations are now living in homes around the world.
Children at Christ The King RC Primary School in Thornaby all wore their festive jumpers with pride.
fast forward from 2001 and there's everything from flashing Christmas jumpers to fully antlered reindeer hoodies to keep everyone warm from mid-November.
And this year, celebs are wearing silly sweaters for a particularly good reason (other than that Xmas jumpers ROCK).
a leading ISO 9001:2008 global supplier of RF and microwave products, has expanded its line of high performance, low PIM corrugated coaxial cable jumpers.
99, Converse @ Office Patterned knit jumpers are the big trend for the autumn.
Give yourself a warm glow this winter by making drab old jumpers and coats stylish.
But because winning the game motivates this bird, rather than saving money, Lesser Jumpers proudly display their gate-crashing success for all to see (a perpetual sly smile is often a dead giveaway).