Category Archives: PDP-1 Restoration Project

Official CHM PDP-1 Restoration site is now online

Posted on July 20, 2006 by Eric

The Computer History Museum’s PDP-1 Restoration web site is now open to the public. Thanks go to the CHM staff for putting together a nice site, and to the rest of the team for their tireless efforts to make the … Continue reading →

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New and used inkspitters

Posted on February 19, 2006 by Eric

For quite some time now I’ve wanted a color printer, especially one that can handle B-size paper (11 x 17 inches), and one that can print onto printable CD-R and DVD-R media. Traditionally CD-R printers have been very expensive, even … Continue reading →

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Vintage Computer Festival 8.0; PDP-1 Restoration Completed

Posted on October 31, 2005 by Eric

I’m really looking forward to the Vintage Computer Festival 8.0, coming up next weekend (November 5-6, 2005) at the Computer History Museum in Mountain View, California. I’m not exhibiting this year, but it should be a lot of fun. I … Continue reading →

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New program “edit33″

Posted on September 14, 2005 by Eric

The DEC PDP-1 computer at the Computer History Museum has a Type 30 Precision CRT Display with a Type 33 Symbol Generator. The Type 33 allows the computer to more quickly display small symbols (typically characters) using a five by … Continue reading →

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WREC in action; Subversion

Posted on January 9, 2004 by Eric

At last night’s meeting of the PDP-1 Restoration Project, we actually used WREC to reform four capacitors out of two of the Type 728 power supplies. In the process I found and fixed a few minor bugs. I need to … Continue reading →

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WREC and real-time graphing

Posted on January 7, 2004 by Eric

Started looking at adding real-time graphing to WREC. The most obvious choices appear to be the gtkplot component of the GtkExtra library, or Guppi. Guppi development seems to be stalled, and I didn’t see any example code or documentation describing … Continue reading →

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WREC

Posted on January 7, 2004 by Eric

A preliminary release of WREC is now available. There’s a tarball on the web page, and a link to information about the subversion source code repository. WREC Reforms Electrolytic Capacitors using an SCPI-programmable power supply. WREC was written for use … Continue reading →

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Reforming electrolytic capacitors

Posted on December 28, 2003 by Eric

On Tuesday I started a new project, WREC. WREC Reforms Electrolytic Capacitors. We’re going to use it for the PDP-1 Restoration Project at the Computer History Museum. I’m trying to finish coding WREC and debug it in time for the … Continue reading →

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