Reprinted from Communications of the ACM, Vol. 14, No. 4, April 1971, pp. 221-227. Copyright © 1971, Association for Computing Machinery, Inc.
This is a digitized copy derived from an ACM copyrighted work. It is not guaranteed to be an accurate copy of the author's original work.

In fact, it contains a number of typographical errors which makes it hard to read.

Found on Jonathan Rees' blog https://odontomachus.wordpress.com/2011/03/07/are-you-confused-yet-about-the-word-representation/

Found via https://www.theregister.com/2023/12/25/the_war_of_the_workstations/

The PIO programmable I/O unit can be used to emulate transputer links and presumably (http://www.inmos.com/inmos_legacy.html) SpaceWire links.

Greaseweazle allows versatile floppy drive control over USB. Read and write your vintage floppy disks from your PC/Linux/Mac computer. This USB device lets you to connect an old floppy disk drive to your modern computer to read/write floppy disks from any system with Shugart standard drives (Amiga, Atarí, Commodore, Amstrad, Sinclair, PC, CNC machines, musical instruments, industrial equipment, and more.)

By extracting the raw flux transitions from a drive, any disk format can be captured and analyzed. The Greaseweazle also supports writing to floppy disks, from a range of image file formats including those commonly used for online preservation (ADF, IPF, DSK, IMG, HFE, …).

Greaseweazle V4 is the latest version, updated for mass production and with the following features:

Reads and writes 3″, 3.5″, 5.25″, 8″ disks (with suitable drive and cable)
Buffered outputs, for communicating with older 5.25″ and 8″ disk drives
Integrated power connector for directly powering most 3.5″ disk drives
Write-enable jumper can be removed for safer preservation of precious vintage disks
Supports floppy-modded 5.25″ drives
Supports Disk-Change detection as used by Rob Smith’s integration into the WinUAE Amiga emulator
3 user-definable outputs (eg. 8″ interface REDWC signal)
100% factory tested, and tested again by me before shipping

Found via https://www.tuhs.org/pipermail/tuhs/2023-January/027510.html

OpenSK https://github.com/google/OpenSK released by Google is a fully open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.

OpenSK is based on the FIDO2 specifications, which combine the World Wide Web Consortium’s (W3C) Web Authentication (WebAuthn) specification and FIDO Alliance’s corresponding Client-to-Authenticator Protocol (CTAP).

The nRF52840 MDK USB Dongle works well with OpenSK. Taking advantage of the UF2 Bootloader, you can easily program the OpenSK by just copying the .uf2-format image to the flash drive.

Hardware to emulate the SPI memory in PCs to speed up the development of free BIOS firmware.
Found on the Oberon mailing list.
See also the articles about retrocomputing and security, e.g. https://trmm.net/Cosign/

Found on https://www.theregister.com/2023/02/09/balthazar_free_hardware_laptop/

Completely open hardware and open-source firmware. N-Key rollover: Diodes on every keyswitch prevent ghosting. Controller: ATmega32U4 with open source firmware based on LUFA. Easy to update via USB.

Now also supported by the popular QMK firmware.

Documentation and description of projects using Inmos Transputer processors.
Found via a link on http://www.chilton-computing.org.uk/inf/transputers/overview.htm

After reading https://forums.theregister.com/forum/all/2022/05/06/pi_pico_transputer_code/, I was looking for information related to transputers and found this page.

The point-to-point technology to link transputers was formalised in the IEEE 1355 standard. This was further developed under the ESA into SpaceWire, which is now designed into a number of space missions under development in Europe, the USA and Japan. A key player in developing SpaceWire was Paul Walker from the transputer team whose company, 4Links, is now selling SpaceWire test equipment.

XMOS mentioned on the page can be found on https://www.xmos.ai