When we are taught about oscillators as newbie engineers, we are shown a variety of waveforms on an oscilloscope or in a textbook. This is a sine wave, they say, this is a sawtooth, this is a square ...

Is there any way to power case fans using chips in the 74HCXX series? They put out a 5volt signal of course...<P>I was thinking about a digital baybus idea, using TTL chips and OPamps to control and ...

Pity the poor TTL computer aficionado. It’s an obsession, really — using discrete logic chips to scratch-build a computer that would probably compare unfavorably to an 80s era 8-bit machine in terms ...

I fear the topic of this column is poised to unleash a tsunami of controversy. My engineering accomplice Joe Farr says that this is one of those topics that, when presented to 10 different engineers, ...

A research team has developed a liquid metal-based electronic logic device that mimics the intelligent prey-capture mechanism of Venus flytraps. Exhibiting memory and counting properties, the device ...

In some cases, newer releases of data sheets contain less information than their counterparts from yesteryear. Does this make anyone else wonder if we’re really making progress? In some cases, newer ...