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The Line Printer Daemon protocol/Line Printer Remote protocol (or LPD, LPR) is a network printing protocol for submitting print jobs to a remote printer. The original implementation of LPD was in the Berkeley printing system in the BSD UNIX operating system; the LPRng project also supports that protocol.
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.
In computer networking, a print server, or printer server, is a type of server that connects printers to client computers over a network. [1] It accepts print jobs from the computers and sends the jobs to the appropriate printers, queuing the jobs locally to accommodate the fact that work may arrive more quickly than the printer can actually handle.
A null modem adapter. Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable.The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters ...
The original IBM parallel printer adapter for the IBM PC of 1981 was designed to support limited bidirectionality, with 8 lines of data output and 4 lines of data input. [citation needed] This allowed the port to be used for other purposes, not just output to a printer. This was accomplished by allowing the data lines to be written to by ...
Königsberg (/ ˈ k ɜː n ɪ ɡ z b ɜːr ɡ /, German: [ˈkøːnɪçsbɛʁk] ⓘ; lit. ' King's mountain '; Polish: Królewiec; Lithuanian: Karaliaučius; Baltic Prussian: Kunnegsgarbs; Russian: Кёнигсберг, romanized: Kyónigsberg, IPA: [ˈkʲɵnʲɪɡzbʲɪrk]) is the historic German and Prussian name of the medieval city that is now Kaliningrad, Russia.