Few people have heard of it, yet many consider John Blankenbaker's KENBAK-1 to be the first commercial personal computer.

Koss introduced these headphones over 40 years ago, and they remain affordable favorites to this day.

Single Digit LED Clock Kit

Led_single_digit_clock_1 Seven segment LED displays are great, especially when made into a simple but alluring clock. This slightly strange device is the Jumbo Single Digit Clock ($20) from Belgian electronics kit maker Velleman. It measures 2.9" x 2.3" x 1.3" and assembles quickly. Velleman USA offers an eclectic array of nifty electronic gadgets and do-it-yourself kits that range from high-end tube amplifiers to flashing LED-based Santa displays.

Single Digit LED Clock kit (QKits)
Velleman USA site (with an almost-too-small-to-read online catalog)

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