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2. Zenith Z-89 - Wikipedia

   en.wikipedia.org/wiki/Zenith_Z-89

   The Zenith Z-89 is based on the Zilog Z80 microprocessor running at 2.048 MHz, and supports the HDOS and CP/M operating systems. The US$2295 Z-89 is integrated in a terminal-like enclosure with a non-detachable keyboard, 12-inch monochrome CRT with a 80x25 character screen, 48 KB RAM, and a 5.25" floppy disk drive.

3. Heathkit - Wikipedia

   en.wikipedia.org/wiki/Heathkit

   1947 Heathkit ad featuring the 5-inch oscilloscope. Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $335 in 2023) for the DIY kit. [1] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath ...

4. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Desktop publishing suite with PDF viewing, editing and creation features PDFCreator: GNU GPL/Proprietary: Yes: Virtual printer for Windows using a custom license called FairPlay. Used Ghostscript GPL until v1.7.3. Now uses .NET Framework 4. Includes adware. PDF24 Creator: Proprietary: Yes: A PDF creator and virtual PDF printer for Microsoft ...

5. PDFedit - Wikipedia

   en.wikipedia.org/wiki/PDFedit

   PDFedit is a free PDF editor for Unix-like operating systems (including Cygwin on top of Windows). It does not support editing protected or encrypted PDF files or word processor-style text manipulation, however. [1] PDFedit GUI is based on the Qt 3 toolkit and scripting engine , so every operation is scriptable. It also has the ability to be ...

6. Zenith Data Systems - Wikipedia

   en.wikipedia.org/wiki/Zenith_Data_Systems

   Zenith Data Systems Corporation (ZDS) was an American computer systems manufacturing company active from 1979 to 1996.It was originally a division of the Zenith Radio Company (later Zenith Electronics), after they had purchased the Heath Company and, by extension, their Heathkit line of electronic kits and kit microcomputers, from Schlumberger in October 1979.

7. PDF - Wikipedia

   en.wikipedia.org/wiki/PDF

   PDF 2.0 allows metadata to be attached to any object in the document, such as information about embedded illustrations, fonts, and images, as well as the whole document (attaching to the document catalog), using an extensible schema. PDF documents can also contain display settings, including the page display layout and zoom level in a Viewer ...