This was fun: Mouse Cursor History (and why I made my own).
Mouse Cursor History
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Monthly Archives: May 2022
Understanding SMD size code
Today I discovered Understanding SMD size code which does a good job of explaining imperial vs metric SMD/SMT size codes. Note “SMT” means Surface Mount Technology and “SMD” means Surface Mount Device.
William Kahan on floating point
Today I found myself reading William Kahan’s homepage after having waded through An Interview with the Old Man of Floating-Point.
The Two Percent Solution
This is old (20 years old!), but fun: The Two Percent Solution.
Hewlett Packard HP 8018A Serial Data Generator
I saw this Hewlett Packard HP 8018A Serial Data Generator for sale for US $2,000 after having seen it mentioned over on Using a 1930 Teletype as a Linux Terminal. That sent me off trying to see if I could get my UTG962E from the UNI-T UTG900E series arbitrary function waveform generator to transmit a custom waveform. I managed to get the software installed on Windows and apparently I can upload any of *.sav, *.rec, *.dat, *.uwr, *.wfr, *.wf to my waveform generator, but I have no idea how to generate such files.
Two star programming
Was referred to this one by my mate bsandro about how to effectively use pointers to pointers: Two star programming.
Subnormal number
This came across my desk today: Subnormal number.
Apollo Guidance Computer
Reading about the Apollo Guidance Computer. Compare that to the US$3.23 ATtiny85.
| Spec | AGC | ATtiny85 |
|---|---|---|
| Word size | 16-bit | 8-bit |
| Clock | 2 MHz | 20 MHz |
| ROM | 72 KiB | 8 KiB |
| RAM | 4,096 B | 512 B |
The values in the above table are approximate, see the sources listed above for actual figures. Basically the $3 chip is ten times faster than the AGC but with less storage. Call it a draw?
PoC || GTFO
lol. My new books arrived:
These are hilarious and fun. The content is available free online on archive.org. The supplementary files are in the same place. (Some of the PDF files are ZIP files!)