Before I worked with computers, I was interested in electronic circuits and the construction of all kinds of electronic devices. Over the past few years I’ve rediscovered this interest and occasionally explore both old and new hardware.

More about this see my blog posts about the topic “electronis”.

Other sources

List of 4000-series integrated circuits (Wikipedia)

List of 7400-series integrated circuits (Wikipedia)

LOGIC Pocket Data Book (Rev. B, 7400 series Texas Instruments)