Category Archives: Computers

PC software and hardware

Programmers: Make Things Easy and Fast for Your Users

I’ve been writing software for over 50 years and have evolved a set of rules for designing user interfaces that are easy to use and which allow users to get their work done as quickly as possible. These rules apply equally to desktop applications, apps, and web pages. I don’t know what they’re teaching in … Continue reading Programmers: Make Things Easy and Fast for Your Users

Brother ML500 Typewriter Repair and Battery Replacement

There is very little information on this electronic typewriter on the web. I’m selling one on eBay and wanted to check the battery (used for the word processing memory and probably for retaining settings). To do so I had to take the thing apart. Here is what I learned. Opening up the Typewriter It’s kind … Continue reading Brother ML500 Typewriter Repair and Battery Replacement

Adding Fonts in Ghostscript

I use a program that produces Postscript and allows use of non-standard Postscript fonts. I wanted to figure out how to get Ghostscript to load those fonts so I could produce a PDF file from the Postscript. Should be simple, eh? Well it took me a week of trolling message boards, studying documentation, and trying … Continue reading Adding Fonts in Ghostscript

Troubleshooting Zebra/Eltron Label Printers

This article describes some of the troubleshooting tips I’ve discovered for solving problems printing labels with Zebra Eltron label printers. Power Supply Problems Most of the label printers you get on eBay come without power supplies. However, other sellers have power supplies that are claimed to be for these printers available for $10 or so, … Continue reading Troubleshooting Zebra/Eltron Label Printers

Get a Really Cheap VoIP Replacement for your Landline

I’ve been doing a fair amount of VoIP (Voice over Internet Protocol] work and have learned a lot about replacing both small business and home phone lines with internet-based VoIP service.  I’ve found reasonably-priced products and services, and in this post (and hopefully others)  I’ll share my experience with the options for replacing one or … Continue reading Get a Really Cheap VoIP Replacement for your Landline

USB Parallel Port Adapters

If you’re trying to hook up an old printer or other device with a parallel port (DB25) or Centronics (CN36) interface, but you have a newer computer without a parallel port, there are easy-to-use adapters available for a few bucks that will give you the required port.  These ports are also sometimes called IEEE 1284 … Continue reading USB Parallel Port Adapters

Mailing & Shipping 101: Label Printers

These are a bit of a luxury but well worth the expense if you ship more than one or two packages or flats a week. You just click “Print” and out comes a professional-looking label ready to use. Types of Thermal Label Printers A bit of terminology clarification is needed: there are two kinds of … Continue reading Mailing & Shipping 101: Label Printers