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2. HP calculators - Wikipedia

   en.wikipedia.org/wiki/HP_calculators

   HP calculators. HP calculators are various calculators manufactured by the Hewlett-Packard company over the years. Their desktop models included the HP 9800 series, while their handheld models started with the HP-35. Their focus has been on high-end scientific, engineering and complex financial uses.

3. Multi-function printer - Wikipedia

   en.wikipedia.org/wiki/Multi-function_printer

   Multi-function printer. A Ricoh 5055 B&W MFP (released in 2017). An MFP ( multi-function product / printer / peripheral ), multi-functional, all-in-one ( AIO ), or multi-function device ( MFD ), is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business ...

4. List of printing protocols - Wikipedia

   en.wikipedia.org/wiki/List_of_printing_protocols

   A printing protocol is a protocol for communication between client devices (computers, mobile phones, tablets, etc.) and printers (or print servers).It allows clients to submit one or more print jobs to the printer or print server, and perform tasks such as querying the status of a printer, obtaining the status of print jobs, or cancelling individual print jobs.

5. HP 2640 - Wikipedia

   en.wikipedia.org/wiki/HP_2640

   The HP 2640A [1] was introduced in November 1974 at a list price of US$3000. [2] [3] [4] Based on the Intel 8008 CPU, it had 8 KB of ROM firmware and came standard with 1 KB of RAM, expandable up to 8 KB (two 4 KB semiconductor RAM cards). In September 1975 Hewlett-Packard introduced the HP 2644A, which was an HP 2640A with mass storage (two ...

6. Duplex printing - Wikipedia

   en.wikipedia.org/wiki/Duplex_printing

   Duplex printing. Duplex printing is a feature of some computer printers and multi-function printers (MFPs) that allows the printing of a sheet of paper on both sides automatically. Print devices without this capability can only print on a single side of paper, sometimes called single-sided printing or simplex printing. [1]

7. Virtual printer - Wikipedia

   en.wikipedia.org/wiki/Virtual_printer

   Virtual printer. In computing a virtual printer is a simulated device whose user interface and API resemble that of a printer driver, but which is not connected to a physical computer printer . When a document is "printed" by a virtual printer, instead of physically printing it on paper or other material the underlying software processes the ...