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KIM-1 PCB Edge connectors

The KIM-1 needs 2 edge connectors.

The specifications are: card edge; PIN: 44; 3.96mm

When you search for those, the cheap ones pop up, Chinese made, look good. But they are no good, when you slide them one you need a lot of force, some even use a hammer!
The PCB is too thick for these connectors, you damage the edge fingers and can not change once connected.
DO NOT USE THEM for a KIM-1!

I had some luck, years ago I bough a lot, cable type (solder eyelets) from Conrad and they are perfect for the KIM-1.

307-044-500-202 Standard Card Edge Connectors 44P SOLDER EYELETS 5.08mm ROW SPACE, for sliding on a PCB edge connector.
307-044-520-202 Standard Card Edge Connectors 44P Card Edge PC Tail, for a motherboard

EDAC 307 357 Series Card Edge Connectors English Ordering Guide

307-044-520-202 – EDAC Card Edge Connector

307-044-500-202 – EDAC Card Edge Connector

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KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors.

The specifications are: card edge; PIN: 44; 3.96mm

When you search for those, the cheap ones pop up, Chinese made, look good. But they are no good, when you slide them one you need a lot of force, some even use a hammer!
The PCB is too thick for these connectors, you damage the edge fingers and can not change once connected.
DO NOT USE THEM for a KIM-1!

I had some luck, years ago I bough a lot, cable type (solder eyelets) from Conrad and they are perfect for the KIM-1.

307-044-500-202 Standard Card Edge Connectors 44P SOLDER EYELETS 5.08mm ROW SPACE, for sliding on a PCB edge connector.
307-044-520-202 Standard Card Edge Connectors 44P Card Edge PC Tail, for a motherboard

EDAC 307 357 Series Card Edge Connectors English Ordering Guide

307-044-520-202 – EDAC Card Edge Connector

307-044-500-202 – EDAC Card Edge Connector

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All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet.
I took the opportunity to scan/rescan/repair what I have online until now.
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

Noteworthy are the new revised K-1008 September 1979 document and the now complete and revised K-1013 manuals and 2 versions of the CODOS V1 manual.
All the K-1002 documents, for KIM-1, SYM-1, AIM 65 and Commodore PET are new.

Micro Technology Unlimited – Retro ComputingMTU history: Hal Chamberlin
MTU Catalogs, Product Descriptions and Newsletters
MTU Application notes
MTU K-1000 power unit
MTU K-1002 Audio D/A Converter
MTU K-1005 Card File and Motherboard using KIM/MTU bus
MTU K-1007 PET MTU bus interface
MTU K-1008 Visable Memory
MTU K-1008 documents
Dave Plummer has a K-1008
The K-1008 and the KIM-1 Simulator
Graphics Software Package K-1008
K-1008 Test programs
K-1008-2L Patches to Microsoft BASIC
K-1008 Visable Memory Replica by Eduardo Casino
MTU K-1009-1C AIM 65 Printer Enhancement Package
K-1012 PROM expansion board
K-1013 floppy controller
MTU CODOS
MTU K-1016 16K RAM board
MTU K-1020 Prototyping board
MTU K-1032 Banker RAM ROM I/O

MTU Application notes

MTU Application Note 1
Battery power for your KIM-1
MTU Application Note 2
use of the K-1008 Visible Memory For Grey Scale Display
MTU Application Note 3 K-1008 50 Hz Operation
MTU Application Note 4
Using 2716’s with the K-1012 PROM I/O board
MTU Application Note 5
Addressing the K-1008 on 4K boundaries
MTU Application Note 6
Addressing considerations in expanded AIM 65 systems
MTU Application Note
Optimizing usage of the AiM 65 I/O block
MTU Application Note 7
Using Qume Datatrack-8 with the K-1013

K-1012 PROM expansion board

MTU K-1012 May 1979 PROM I/O
MTU K-1012 PROM I/O Jan 1980

K-1012 Circuit 1


K-1012 Circuit 2

K-1012 Circuit 3

K-1012 PROM Expansion Board

K-1012 PROM Expansion Board

MTU K-1016 16K RAM board

An MTU/KIM bus compatible 16K RAM board. with dynamic RAMs type MM5280, as used also in theK-1008 Viable Memory.

MTU K-1016 16k memory January 1979
MTU K-1016 16k memory Manual Revised September 1979

K-1016 Circuit part 1

K-1016 Circuit part 2

K-1016 Circuit part 3

K-1016 Circuit part 4

K-1016 Memory Expansion Board

K-1016 Memory Expansion Board

MTU K-1020 Prototyping board

An MTU/KIM bus compatible prototyping board. With on baord +5V and +12V power supplies.

MTU K-1020 user manual August 1979
MTU K-1020 user manual August 1979 alternative version

K-1020 Prototype board

MTU K-1032 Banker RAM ROM I/O

A RAM ROM I/O board with flexible addressing.

  • 32K RAM in 2x 16K pages
  • 8/16K (EP)ROM
  • EPROM Programmer (2716/2732)
  • 4x 8 bit I/O ports (2×6522)
  • Bank switching for RAM and ROM
MTU K-1032 Banker RAM ROM manual



K-1032 Expansion Board

K-1032 Expansion Board

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MTU K-1007 PET MTU bus interface

The K-1007-1-PET is an interface between the PET 2001 and the MTU/KIM-1 bus. This allows MTU products to be used on the PET 2001.

K-1007-1-PET interface
K-1007-1-A PET interface manual
K-1007-1-B Circuit diagram
K-1007-1-C Supplement
K-1007-3-A New PET Circuit diagram


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MTU Catalogs, Product Descriptions and Newsletters

Here you can find the product announcements from MTU. Starting with KIM-1 products like the K-1008 Visable memory in 1978 to the large product range for KIM-1, SYM-1, AIM 65 and PET CBM Commodore and Apple. Not just product descriptions, but also in depth information on the products.
All newly scanned and corrected in July 2025.

MTU Product Descriptions 1978
KIM-1 products like 16K RAM board K-1016, K-1008 Visable Memory, K-1000 PSU, K-1005 card file
MTU Catalog Spring 1979 A2
MTU Catalog Autumn 1979 A3
MTU Catalog spring 1980 A5
MTU Catalog fall 1980 B6
MTU News V1.1 1982-05
MTU News V1.2 Q3 1982
MTU News V1.3 Q1 1983
MTU News V1.4 Q2 1983
MTU-130 The Personal Computer of Professionals