welcome to the 1802 Handheld Computer pages

since it was nearly 25 years ago that i created this monster, i can barely remember where or when i did it - and more uncertain now is how ...or even why... i did it

i was amazed to find after all this time that there are user groups of 1802 'afficionados' around the world who still construct and experiment with this chip

so, in the hope that my experiences with the 1802 will encourage others - in the same way that an introductory article to the Cosmac in an early issue of  'Personal Computer World' encouraged me to design and create the HHC - i've tried to record some of the details here for present day experimenters

sandy robson
dorset, england

1 april 2004

(the background image is an early draft of the cpu and memory circuitry)