Our hacker [John Duffy] wrote in to let us know about a video he put together to explain the design of his open-source multimeter, the HydraMeter. If you’re interested in how the circuitry ...

In this paper, the design of a convolutional encoder with three flip-flops, in CMOS technology, with 1.2 V DC voltage source is done. This circuit is intended to be included in portable devices, ...

The proposed encoder in two dimensional photonic crystals is analyzed in terms of flow of light inside waveguides. Waveguides have been created by removing silicon rods in the structure and defects ...