OSAlert reader Rui Caridade brought our attention to a YouTube channel with retrospectives about various computing devices from the past 40 years or so that would be interesting to our readers, such as RISCy Business – The Acorn RiscPC – ARM in a desktop, NeXTSTEP on a 486 Packard Bell, and The World’s First Laptop – Epson HX-20 / HC-20.