Technical notes

This page gives access to a collection of technical notes on a variety of subjects.

• 100+ coding conventions for punched tape and cards, magnetic tape, and other media
• more coding conventions
• the current loop interface
• 8" floppy disk formats
• delay line memory
• core memory
• analog computers
• papertape
• polar planimeter
• instruction reference cards
• board-level wiring techniques
• Willams tube memory
• electrolytic capacitors
• troubles in computer conservation: some examples
• remarkable mass storage devices
• EIA RS232C / V.24 connections

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The pictures were taken from R. Lohberg and Th. Lutz: Hoe werkt een computer?, Kluwer (Netherlands) 1968.
en-schakeling = and-circuit; of-schakeling = or-circuit; schakelaar = switch.