David Butleradded January 6, 2019

The KENBAK-1 is considered by the Computer History Museum and the American Computer Museum to be the world's first personal computer. It was invented by John V. Blankenbaker of Kenbak Corporation and sold from 1971-1973. However it is often forgotten in computer history, as only about 40-50 machines were sold, and only around 15 are believed to still exist. The original price of 750USD was just too much to get people interested. It is typically overshadowed by more successful computers like the Altair 8800 from 1975.
This kit uses the same ATmega328P from the Arduino Uno to emulate the KENBAK-1. However, it also contain some 74 series "glue-logic" TTL chips, specifically the 74HC165 and 74HC595 shift registers. I'm not sure what scale the kit is. However, it seems to have all of buttons and lights as the original. The paddle switch for power is missing, as well as a few other things. I will grab a few pictures of genuine KENBAK-1 units for comparison.
I havent done much with my kit, but the manual did contain a program to make the computer count from 0 to 255 in binary over and over again. It also had ways to turn the system into a clock.