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2. HP Universal Print Driver - Wikipedia

   en.wikipedia.org/wiki/HP_Universal_Print_Driver

   HP provides two different Universal Print Drivers: PCL 6 and emulation PostScript. PCL is a proprietary HP page description language, thus built in to their printers. Custom default values can be assigned with the HP Driver Configuration Utility. HP UPD is available in 32-bit or 64-bit, with 35 currently supported spoken languages for the ...

3. Unidrv - Wikipedia

   en.wikipedia.org/wiki/Unidrv

   To determine whether a driver is Unidrv-based, the following steps need to be taken on Windows: Click the Start button, and then open the Printers folder. From the File menu, click Server Properties. Click the Drivers tab. Select a driver, and then click Properties. Observe the driver list in the Driver Properties dialog box.

4. Uniform Driver Interface - Wikipedia

   en.wikipedia.org/wiki/Uniform_Driver_Interface

   The Uniform Driver Interface (UDI) allowed device drivers to be portable across both hardware platforms and operating systems without any changes to the driver source. With the participation of multiple OS, platform and device hardware vendors, UDI was intended to be the first interface which was likely to achieve such portability on a wide scale.

5. Device driver - Wikipedia

   en.wikipedia.org/wiki/Device_driver

   In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. [1] A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to ...

6. Windows Driver Model - Wikipedia

   en.wikipedia.org/wiki/Windows_Driver_Model

   Common device driver compatibility issues include: a 32-bit device driver is required for a 32-bit Windows operating system, and a 64-bit device driver is required for a 64-bit Windows operating system. 64-bit device drivers must be signed by Microsoft, because they run in kernel mode and have unrestricted access to the computer hardware. For ...

7. 64-bit computing - Wikipedia

   en.wikipedia.org/wiki/64-bit_computing

   The term 64-bit also describes a generation of computers in which 64-bit processors are the norm. 64 bits is a word size that defines certain classes of computer architecture, buses, memory, and CPUs and, by extension, the software that runs on them. 64-bit CPUs have been used in supercomputers since the 1970s (Cray-1, 1975) and in reduced ...