Mastodawn

Learn to program RISC-V virtual memory in the latest installment of my #wikiversity #os course. Lots of exciting #hexadecimal and #binary action in this one!

https://en.wikiversity.org/wiki/Operating_Systems_(Hands-On)/Virtual_Memory

Operating Systems (Hands-On)/Virtual Memory - Wikiversity

David JONES Feb 19

The ZX81 character set is objectively the best because A to Z immediately follow on from 0 to 9. 0 has code 28; A has code 38 (unlike ASCII where there is a gap of 7 codes: 0 has code 0x30, A has code 0x41). This means that to convert from 0 to 15 to a single hex digit, we can do CHR$(28+H), where H is the digit we are converting. If we need the most significant digit of a two-digit hexadecimal number we can do CHR$(28+INT(H/16)). But. Because CHR$ rounds its input, we can remove the INT: CHR$(28+H/16). But. Mysteriously INT is mathematical floor, whereas CHR$ rounds to nearest (and 0.5 goes up). So CHR$(28+H/16) is wrong when the least sig digit is 8 to F. But can be corrected with: CHR$(27.5+H/16). Haha.
(which is the code i used).
#ZX81 #Hexadecimal

StefanoGaivota Feb 4

Figuring out a model for a stochastically flat D16 / hexadecimal dice.

This is a truncated sphere with face positions determined by minimum energy surface-confined electrostatic repulsion calculation iterated until zero calculable difference occured in point positions.

All faces are circles of equal diameter.

It does means that there is no definite uppermost face when one face is on the deck. So... each numeral has a decimal point which is positioned to be uppermost when its opposite number is down against the table.

Still need to adjust numeral emboss depth for equal volume removed but that's down in the weeds with regard to fairness.

#Dice #Randomness #Chance #TTRPG #3DModelling #Hexadecimal

Kerrick Long (blog)Dec 14

This Great Tool Helps You Name Any Hex Color

Chirag Mehta made a really great tool. Pick a color or paste a hex code, and it gives you the nearest descriptive name for that color. […]

https://kerrick.blog/posts/2025/this-great-tool-helps-you-name-any-hex-color/

This Great Tool Helps You Name Any Hex Color - Kerrick Long (blog)

Do you know the difference between Blaze Orange and Clementine? Name That Color by Chirag Mehta will give you a descriptive name for any color hex code.

Kerrick Long (blog) - Articles about programming, learning, code, books, and teams

Patrick

Nov 29

One Open-source Project Daily

A command-line hex viewer

https://github.com/sharkdp/hexyl

#1ospd #opensource #binarydata #commandline #hexadecimal #rust #tool

Electro Robot Nov 25

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Les codes et le codage

Dans l'électronique, nous retrouvons plusieurs systèmes de codes. Parmi les techniques les plus utilisées; le code naturel, BCD, Gray et ASCII

Electro-Robot

novaTopFlex Nov 9

#BaseConversion in #mathematics: #Binary #Exponential #Octal #Decimal #Hexadecimal

novaTopFlex Nov 9

#Hexadecimal #Mathematics represented in #graphs in a plot:

El Proxy Oct 26

📰 «¿Qué es un código hash?»
🔗 https://proxy.jesusysustics.com/2025/10/27348/

El truco para saber si tu .exe es seguro (hash)

Un tema técnico pero explicado de forma bastante amena por Migma. Se trata de un código hexadecimal (números y algunas letras) único que se vincula con un documento o archivo y nos permite verificar si ha sido manipulado incluso en cualquiera de sus bits. Fundamental para un uso seguro de la Informática, aunque la mayoría de la gente no se preocupe por ello.

#️⃣ #conceptoInformático #curiosidad #hexadecimal #Informática #seguridad