driver


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driver

1. a mechanical component that exerts a force on another to produce motion
2. Golf a club, a No. 1 wood, with a large head and deep face for tee shots
3. Electronics a circuit whose output provides the input of another circuit
4. Computing a computer program that controls a device

driver

[′drī·vər]
(computer science)
A sequence of program instructions that controls an input/output device such as a tape drive or disk drive.
(electronics)
The amplifier stage preceding the output stage in a receiver or transmitter.
(engineering acoustics)
The portion of a horn loudspeaker that converts electrical energy into acoustical energy and feeds the acoustical energy to the small end of the horn.

driver

(operating system)

driver

(programming)
The main loop of an event-processing program; the code that gets commands and dispatches them for execution.

driver

(tool)
In the TeX world and the computerised typesetting world in general, a program that translates some device-independent or other common format to something a real device can actually understand.

driver

(1) A loudspeaker. The terms "driver" and "speaker" are used synonymously; however, "the speaker has four drivers" means that the speaker enclosure contains four speakers.

(2) A hardware device (typically a transistor) that provides a signal or current to trigger some function. See line driver.

(3) Also called a "device driver," it is a program routine that links the operating system to a peripheral device. Written by programmers who understand the peripheral hardware's command language and characteristics, the driver contains the precise machine language necessary to perform the functions requested by the application.

The Driver Is the Interface
When a new peripheral device is added to the computer, such as a graphics card, its driver must be installed in order to use it. The application calls the operating system, the operating system calls the driver, and the driver makes the device work (it "drives" the device). Routines that perform internal functions, such as memory managers and disk caches, are also drivers.

Drivers Can Drive You Crazy!
Sometimes, the solution to a problem is to update a driver, because the current version has bugs. Hardware vendors are always releasing newer versions. For example, everything you see on screen is the result of the display driver (video driver) drawing the screen according to the commands that the operating system issues to it. Such drivers are extremely complex and can be error prone.

There Used to Be More Drivers
In the "old" days of DOS PCs, in order to provide complete control over the printing of a document, software applications included a driver for each of the popular printers. With Windows and Mac, the printer driver is installed into the operating system, not into each application. All applications print through the OS, which commands the printer via the one driver for that printer. See filter driver and driver signing.


Windows Display Driver
To display something on screen, a Windows application makes calls to the Graphics Device Interface (GDI). GDI converts the calls to driver functions, and the driver commands the display adapter (graphics card).







PC Drivers
Every peripheral device requires a driver. The drivers provide the detailed instructions necessary to activate and control the device.


PC Drivers
Every peripheral device requires a driver. The drivers provide the detailed instructions necessary to activate and control the device.


PC Drivers
Every peripheral device requires a driver. The drivers provide the detailed instructions necessary to activate and control the device.
References in classic literature ?
Hitherto I had always been driven by people who at least knew how to drive; but in this place I was to get my experience of all the different kinds of bad and ignorant driving to which we horses are subjected; for I was a "job horse", and was let out to all sorts of people who wished to hire me; and as I was good-tempered and gentle, I think I was oftener let out to the ignorant drivers than some of the other horses, because I could be depended upon.
Then, as we flew along, the driver leaned forward, and on each side the passengers, craning over the edge of the coach, peered eagerly into the darkness.
The dogs were tired, the drivers grumbling, and to make matters worse, it snowed every day.
The black driver grins again, but there is another hole, and beyond that, another bank, close before us.
The driver had fluttered his ticket in the eyes of the branch-toll keeper, and they were now brought to on the highest and most solitary part of the by-road.
They had now got half way between the two cities, and Charles took a seat by the side of the driver, with the intention, as he expressed himself, of stretching his legs: the carriage was open and light, so that all of the figures of the two young men could be seen by the ladies, as well as their conversation heard.
I think I won't deprive you on it,' returned the driver, casting his eyes over it with no great favour, without taking it.
Petersen Sahib came in on his clever she-elephant Pudmini; he had been paying off other camps among the hills, for the season was coming to an end, and there was a native clerk sitting at a table under a tree, to pay the drivers their wages.
All the drivers were more or less the worse for merry-making, and the groom was absorbed in his bride.
We might have spared one neck out of the three," muttered the driver, rubbing his ear and pulling his nose, to ascertain whether he had been cuffed or not.
I had forgotten the driver," said Miss Bartlett, reddening.
Multitudes of drivers might howl in his rear, and passengers might load him with opprobrium, he would not awaken until some blue policeman turned red and began to frenziedly tear bridles and beat the soft noses of the responsible horses.