DIGI-COMP 1 Computer

The DIGI-COMP 1 was the first computer I owned -- a working mechanical computer to assemble and experiment with.  It came with an excellent manual that was a computer education in itself.

There is an excellent video on the DIGI-COMP 1:

The wonderful RETROCMP site for restoration of classic computers has an excellent and comprehensive page on the DIGI-COMP 1:

DIGI-COMP 1 - introduction

Here is a link to the excellent instructional manual that came with the computer (and is useful if you want to use the emulation shown below):

DIGI-COMP 1 INSTRUCTION MANUAL

Here is a link to the parts list and assembly instructions:

DIGI-COMP 1 PARTS LIST AND ASSEMBLY INSTRUCTIONS

Two DIGI-COMP enthusiasts Larry Groebe and Kevin Williams created an excellent working emulation in javascript:

DIGI-COMP 1 - EMULATOR

A fun unboxing video of a vintage Sixties DIGI-COMP 1