Rod Logic

Robert B on December 24th, 2010

Based on the plan in the previous post, I have completed and tested the spiral cam drive. First, I cut to size some aluminum round stock on the lathe, and drilled a 3/4-inch hole through, also on the lathe, for the Acme rod. This became my blank. Next, I wrote a program to generate GCode [...]

Continue reading about Completed: Spiral cam drive, intermodule connectivity

Robert B on November 19th, 2010

Here’s an explanation of how I implemented noise margins for the Logical Engine design. Recall that rods have holes for bumps every 0.3125 inches (5/16″), and that the spacing between rods is 1/2″ vertically and 0.625 (5/8″) horizontally. Also, I am using 1/4″ hex standoffs that have the following measurements:   Here’s a setup which [...]

Continue reading about Noise margins in the Logical Engine

Robert B on September 20th, 2010

So now that I’ve had a chance to think long and hard about the design of the arithmetic logic unit, or Logical Mill as Babbage would have called it, I realized that I had several errors in the previous discussion. I also reorganized the Mill to make it possible to increase the number of bits [...]

Continue reading about The Logical Mill, revisited

Robert B on September 15th, 2010

Wherein a device is shewn to compute various logical functions.

Continue reading about Logical Engine No. 1 demonstrator model completed, with video

Robert B on January 22nd, 2010

Brass, brass, wonderful brass. It’s Victorian and steampunk and all industrial-revolutiony. Let’s build a rod-logic brass analytical engine! A hundred years from now, someone will take this design and actually build it, putting it in a museum as “an example of an early 21st century computation device in the style of the alternate-reality subgenre known [...]

Continue reading about Metal computing, part 1

Robert B on January 2nd, 2010

Wherein an alternative Mechanism is shewn, which can transmit the linear Motion of Rods from one Point to a different Point.

Continue reading about A different linear transmission mechanism

Robert B on December 26th, 2009

Wherein several and sundry logical and mechanical Details of the Digital Arithmetical and Logical Mill are discussed.

Continue reading about Babbage-Boole Digital Arithmetical and Logical Mill: Part 2

Robert B on December 26th, 2009

Wherein the Babbage-Boole Digital Arithmetical and Logical Mill is designed.

Continue reading about Babbage-Boole Digital Arithmetical and Logical Mill: Part 1

Robert B on December 24th, 2009

Wherein a Design for the Storage of digital Data within the Rodulator is shewn.

Continue reading about Rod Logic Memory

Robert B on December 19th, 2009

Wherein a possible Mechanism for the pushing and restoring to their resting State of Rods is posited.

Continue reading about Rod logic drive