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Who invented device drivers for computers?
Hiii , friends.
Who invented device drivers for computers? I have no ideas ..so please share your thought. |
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We had device drivers well before graphical UI's though. A device driver for a keyboard, for a serial port, for a disk drive, etc.
Dave |
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Here's Wikipedia's description of device drivers - not specific to GUI.
Here's a Wikipedia description of RT-11, with a main section called "device drivers". It was released in 1970 and happens to be one of the earliest OS's I am familiar with, so that's what I looked up. Dave |
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A device driver creates a layer of abstraction between the hardware and the operating system. They were created by programmers who wanted a standard set of system calls in interact with hardware.
Device drivers were 'invented' when x86 CPU's added the capability to enter 32 bit protected mode. By changing to this mode, the CPU changed how it addressed memory, therefore breaking the 16 bit BIOS system calls. Device drivers are the replacements for the functions provided by the BIOS. |
X86 processors first came out in 1978. The RT-11 operating system linked above came out in 1970 and used device drivers. So device drivers were "invented" before x86...
Dave |
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