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Here are some Windows key commands and what they do: Windows key (Win): opens the Start menu on your computer. Windows button + Tab: switch your view from one open window to the next.
Windows 10: ⊞ Win+x > u > s. Windows 7: ⊞ Win+→+→+↵ Enter. Sleep (available on some keyboards) ⌥ Opt+⌘ Cmd+Eject: Sleep (available on some keyboards, configurable in Control Panel Power Options Advanced tab dialog box) Shut down computer Windows 10: ⊞ Win+x > u > u: Ctrl+⌥ Opt+⌘ Cmd+Eject (no confirmation, shutdown is immediate)
PCL 5 was released on the HP LaserJet III [2] in March 1990, adding Intellifont font scaling (developed by Compugraphic, now part of Agfa), outline fonts and HP-GL/2 (vector) graphics. PCL 5e (PCL 5 enhanced) was released on the HP LaserJet 4 [2] in October 1992 and added bi-directional communication between the printer and the PC and Windows ...
Laser head from HP LaserJet 5L printer. Most HP LaserJet printers employ xerographic laser-marking engines sourced from the Japanese company Canon.Due to a tight turnaround schedule on the first LaserJet, HP elected to use the controller already developed by Canon for the CX engine in the first LaserJet. [6]
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Hewlett-Packard (HP) developed the first ScanJet in the mid-1980s at their printer division in Boise, Idaho. [4] [5] The ScanJet was released in March 1987, [6] as a compliment to their LaserJet series, which was the first commercially successful line of laser printers ever released, [7] introduced in 1984 and also developed at Boise.
While PJL was conceived as an extension to Printer Command Language (PCL), it is now supported by most PostScript printers. Many printer vendors have extended PJL to include commands proprietary to their products. Not all PJL commands documented by HP are implemented in all HP or other vendor products. [citation needed]
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.