We’ve seen a great many cat feeders over the years. Some rely on the Internet of Things, and some rely on fancy microcontrollers. [Larry Cook], on the other hand, built his using a simple 4060 binary ...

The 74HC4520PW-Q100 is a dual 4-bit synchronous binary counter that features CMOS input level, ESD protection, and multiple package options. This device has two clock inputs such as nCP0 and nCP1. It ...

This document is a leaflet of NXP 74LVC169 demonstration board. This demonstration provides an easy evaluation of the 74LVC169, a binary counter with internal look-ahead carry circuitry designed for ...

Makers, developers and hobbyists may be interested in a new interactive binary ruler that has been created by Bradley Slattery. The 15 cm ruler is equipped with seven logic gates, 4 x flip-flops and a ...

Bats use echolocation to see objects in front of them. They emit an ultrasonic pulse around 20 kHz (and up to 100 kHz) and then sense the pulses as they reflect off an object and back to the bat. It’s ...