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#bcd

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dummzeuch

I didn't even know that it exists: GSM / SMS timestamps are stored in a kind of reversed binary coded decimal (bcd) including a time zone. That encodes date (8 digits = 4 bytes) and time (6 digits = 3 bytes) and the time zone (in 1/2 hours with the most significant bit being the sign = 1 byte) in 8 bytes.

So my current time stamp: 2024-08-05 09:06:24 CEST would be:
0242805090604204
0242 = 2024
80 = AUG
50 = 5th
906024 = 09:06:24
04 = +2 h to UTC

#GSM#programming #bcd

seven-bit-forensics.blogspot.c

seven-bit-forensics.blogspot.comDecoding GSM/SMS Timestamps GSM timestamps (TP-SCTS) Probably one of the most common timestamps found within mobile phones is the GSM/SMS timestamp format. Within t...
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Beej 💾

It's not used much anymore, but here's an intro to Binary Coded Decimal addition (using Gameboy as a vehicle).

blog.ollien.com/posts/gb-daa/

bloglien · Demystifying the GameBoy/SM83's DAA InstructionAs an off-and-on side project, I’m working on a GameBoy emulator. I definitely still have a long way to go (still working on the CPU!) but I wanted to share a detail that I felt deserved a more in-depth explanation: the DAA (“Decimal Adjust Accumulator”) instruction. This instruction is notorious for being a bit difficult to wrap your head around, but there is seemingly very little written about it. In principle, this instruction is quite simple; if we perform an arithmetic instruction with two binary coded decimal (BCD) numbers, we should be able to get an output that is also in BCD.
#gameboy#programming#bcd
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☮ ♥ ♬ 🧑‍💻

“Clarification? In his description of the Pais effect here, it seems #Pais is trying to say that through dimensional #analysis of classical means (#Maxwell via #Heaviside + harmonic osc.) one can arrive in conditions that exceed the #Schwinger limit via of some kind of "compounding effect" through rapid acceleration of charges.” — XxxThePsyCheMisTxxX

There is a hierarchy of youtube comments proportional to the subject matter.

#TOE / #physics / #SalPais vs #StephonAlexander #BehindClosedDoors #BCD / #discussion
<youtube.com/watch?v=PE4C7OI7Fr>

High frequency gravitational wave generator. US10322827B2 Inventor Salvatore Cezar Pais Current Assignee US Department of Navy A high frequency gravitational wave generator including a gas filled shell with an outer shell surface, microwave emitters, sound generators, and acoustic vibration resonant gas-filled cavities. The outer shell surface is electrically charged and vibrated by the microwave emitters to generate a first electromagnetic field. The acoustic vibration resonant gas-filled cavities each have a cavity surface that can be electrically charged and vibrated by acoustic energy from the sound generators such that a second electromagnetic field is generated. The two acoustic vibration resonant gas-filled cavities are able to counter spin relative to each other to provide stability, and propagating gravitational field fluctuations are generated when the second electromagnetic field propagates through the first electromagnetic field. source https://patents.google.com/patent/US10322827B2/en
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