159 (NORD-1 card)

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159 Memory OR, 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 C30
35 C30

The logic diagram is documented in drawing 2A59.[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.

  • 8 x 7401 quad 2-input NAND gate with open collector outputs
  • 1 x 7402 quad 2-input NOR gate

Reference

  1. HARDWARE MANUAL NORD 1