Fresnel Lens comparison

http://www.modulatedlight.org/optical_comms/fresnel_lens_comparison.html

is available via the internet, shipped by mail.  This lens is constructed of optical acrylic, it is 320mm x 400mm, 2mm thick, has a "groove pitch" of 0.2mm, a focal length of

Bit permutations

http://programming.sirrida.de/bit_perm.html

as was done on ancient computers. Today only base 2 (i.e. bits) is used, and this is what is crucially needed for all bit operations. If signed numbers are present, it is assumed
An essay about bit permutations in software

Miller Microcomputer Services - Index Page

http://www.millermicro.com/

World's Top 500 Supercomputers Run Linux , The Cathedral and the Bazaar (Eric Raymond, 1997), The Hacker Spirit at MIT (Richard Stallman, 1999), Open Source And Economics , Math p
Business and pleasure by Dick and Jill Miller of Miller Microcomputer Services.

Kermit Security Reference

https://www.kermitproject.org/security.html

mere act of putting two computers in touch with each other was quite amazing. To connect multiple diverse computers to a common network, allowing any pair of them to communicate,

How web bloat impacts users with slow devices

http://danluu.com/slow-device/

on our fast M3 and M1 computers, but they're among the slowest on our Tecno Spark 8C (Reddit's CPU is shown as ∞ because, no matter how long we wait with no interaction, Reddit us

Wilson Mines Co. links

http://WilsonMinesCo.com/links.html

6/16/19. My workbench computers   Added 11/6/17. 6502 stacks treatise   6502 Stacks: More than you thought!  This is actually a set of 19 articles plus appendices.&

MuffinTerm • Online Help

https://muffinterm.app/manual

the most popular home computers of the 8-bit era. It interprets the standard terminal sequences for controlling text attributes such as color and screen layout, and supports the m

OpenBSD Router Guide

https://openbsdrouterguide.net/

but it can protect your computers and devices on the inside of the network, and it can help you monitor and control the traffic that comes and goes to and from your local network.

GuestArticles index [LWN.net]

https://lwn.net/Archives/GuestIndex/

generates 350 Linux computers for schools (March 19, 2008) Fioretti, Marco A look at free software in Ecuador (December 3, 2008) Fleming, Matt The bootstrap process on EFI systems

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