here you goThings I’ve made, read and saved — shared here.

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9,565 entries: 46 from X, 8,923 from Pinboard, saved 1998 to 2026.

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2025

2022

Dive into Systems

diveintosystems.org

Dive into Systems is a free, online textbook that serves as a gentle introduction to computer systems, computer organization, and parallel computing. The book is intended for an audience that has only a CS1 background. It guides readers through a vertical slice of a computer to develop an understanding of a variety of systems topics, including:

how a computer runs a program, from a program expressed in a high-level language to low-level binary representation and circuits

programming in C and Assembly, assuming a CS1 background

introduction to operating systems and the systems costs that affect program performance (the memory hierarchy, caching, and code optimization)

introduction to parallel computing with shared memory and pthreads

2019

2014

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2011

2010

"Just the Maths" by AJ Hobson

nestor2.coventry.ac.uk

"Just the Maths" is a collection of separate units, in chronological topic-order, intended to service foundation level and first year degree level courses in higher education, especially those delivered in a modular style. Each unit represents, on average, the work to be covered in a typical two-hour session consisting of a lecture and a tutorial. However, since each unit attempts to deal with self-contained and, where possible, independent topics, it may sometimes require either more than or less than two hours spent on it.

Icons

raphaeljs.com

These are icons I drew for my personal needs. They are all in vector and drawn on this page with Raphaël (don’t forget to zoom the page). I was thinking that they could be useful for other people and, although the design quality of icons is average, I am releasing them here under MIT licence.

2009

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2007