123 (NORD-1 card)

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.

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

• Hardware in NORD-1 Serial 47