This is old (20 years old!), but fun: The Two Percent Solution.
The Two Percent Solution
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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!)
VK3ATN
Earth’s Moon
Oh wow, just found this from NASA: Earth’s Moon.
JSON object values into CSV with jq
Monitoring CPU clock speed
$ watch 'grep MHz /proc/cpuinfo | awk "{ print \$4 }" | sort -n'