123 (NORD-1 card)

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123 Cycle counter, is a card that is used in the NORD-1 CPU.

Component side.
Solder side.

Introduction

The card is made in the standard NORD-1 card format.

CPU model Crate position
29 D02
35 D02

The logic diagram is documented in drawing 2A23.[1]

Switches and indicators

There are no switches or indicators on this board.

BOM

This list contains the logic circuits used, passive components are not listed.

  • 9 x 7400
  • 2 x 7402
  • 5 x 7410
  • 3 x 7420
  • 1 x 7430
  • 5 x 7440
  • 1 x 7450
  • 2 x 7474

Reference

  1. HARDWARE MANUAL NORD 1