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The RPL character set is an 8-bit character set and encoding used by most RPL calculators manufactured by Hewlett-Packard as well as by the HP 82240B thermal printer. [1] [2] It is sometimes referred to simply as "ECMA-94" in documentation, [1] [3] although it is for the most part a superset of ISO/IEC 8859-1 / ECMA-94 in terms of printable characters, and it differs from ISO/IEC 8859-1 by ...
A HP LaserJet 4000n printer. The LaserJet 4000/4050 and their respective variants were the first printers released in the 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.
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
Early LaserJet models used a two-character display for all status messages. This printer is showing "00", for normal status. Paper out in the upper cassette would be indicated by alternating "11" and "UC". "PC" is an abbreviation for "paper cassette", [4] the tray which holds blank paper for the printer to use. These two-character codes are a ...
HP LaserJet 4. The HP LaserJet 4 (abbreviated sometimes to LJ4 or HP4) is a group of monochrome laser printers produced in the early to mid-1990s as part of the LaserJet series by Hewlett-Packard (HP). The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. [1]
HP Roman-8 is an 8-bit single byte character encoding that is mainly used on HP-UX [2] and many Hewlett-Packard [7] and PCL compatible printers. The name Roman-8 appeared in 1983, [ 1 ] but a precursor of the character set was already used by the HP 250 and HP 300 workstations since 1978/1979 as 8-bit Roman Extension .
The terminology, however, is different: What others call a character set, HP calls a symbol set, and what IBM or Microsoft call a code page, HP calls a symbol set code. HP developed a series of symbol sets, [ 8 ] [ 9 ] each with an associated symbol set code, to encode both its own character sets and other vendors’ character sets.
HP 9815A. Chronologically, the models of the family were: HP 9810A, a keystroke programmable computer with magnetic cards and LED display, introduced in 1971, [1]; HP 9820A, introduced in 1972, was the first HP model that deals with algebraic input (not only RPN) [2] featured a high level language simpler than BASIC that was later named high performance language (HPL),