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2. COM (hardware interface) - Wikipedia

   en.wikipedia.org/wiki/COM_(hardware_interface)

   COM port (DE-9 connector). COM (communication port) [1] [2] is the original, yet still common, name of the serial port interface on PC-compatible computers. It can refer not only to physical ports, but also to emulated ports, such as ports created by Bluetooth or USB adapters.

3. HP 95LX - Wikipedia

   en.wikipedia.org/wiki/HP_95LX

   For mass storage, HP 95LX has a single PCMCIA slot which can hold a static RAM card with its own CR2025 back-up coin cell. An RS-232 -compatible serial port is provided, as well as an infrared port for printing on compatible models of Hewlett Packard printers.

4. Serial port - Wikipedia

   en.wikipedia.org/wiki/Serial_port

   The IBM PC implements its serial ports, when present, with one or more UARTs. Very low-cost systems, such as some early home computers, would instead use the CPU to send the data through an output pin, using the bit banging technique. These early home computers often had proprietary serial ports with pinouts and voltage levels incompatible with ...

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. HP LaserJet 4000 series - Wikipedia

   en.wikipedia.org/wiki/HP_LaserJet_4000_series

   The LaserJet 4000 series printers print letter paper at 17 pages per minute, and can be set to print at 600 dpi or 1200 dpi, although when set to print at true 1200 dpi, the printer runs at reduced speed. These printers may be connected to a computer using either the serial port, parallel port or Ethernet ( for the network capable "N" series ...

7. Printer driver - Wikipedia

   en.wikipedia.org/wiki/Printer_driver

   In computers, a printer driver or a print processor is a piece of software on a computer that converts the data to be printed to a format that a printer can understand. The purpose of printer drivers is to allow applications to do printing without being aware of the technical details of each printer model.