Simple tutorial for programmers

Application Interchange
File Formats

How to use RTF and SYLK files when generating output from a database or other application

Tutorials

  1. 1. RTF – Rich Text Format Basics
  2. 2. RTF – Rich Text Format Working with fonts and tabs
  3. 3. RTF – Rich Text Format Working with tables
  4. 4. SYLK – SYmbolic LinK

Projects of Interest

Photography

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Magic Mirror

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MagicMirror is an open-source, modular smart mirror platform that transforms a standard monitor into a personal dashboard. By placing a two-way mirror over a screen, you create a display where real-time data — clocks, weather forecasts, calendar events, and photo slideshows — appears to float on the surface of the glass.

The guide steps through configuring MagicMirror on a Raspberry Pi 4: two clocks at the top, a local photo slideshow beneath, weather forecasts in the center, a Google Calendar in the lower left, and a Todoist task list in the lower right. You can explore the full range of modules at the official MagicMirror website.

Signetics 2650 8-bit Microprocessor

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Introduced in July 1975, the Signetics 2650 was an 8-bit microprocessor that stood apart from its contemporaries by drawing its architecture directly from the IBM 1130 minicomputer. Despite its elegant design, the 2650 suffered from limited memory addressing (a 32 KB address space) and odd memory access schemes, which quickly saw it overshadowed by the Intel 8080 and Zilog Z80. The chip found a loyal following among hobbyists, particularly in Australia, and continued to see use in arcade games, pinball machines, and home consoles through the early 1980s before being quietly retired as Philips, who had acquired Signetics in 1975, wound down the product line.

Tony Di Bona  ·  Updated May 2, 2026