Computing
There are many mnemonics for the seven layers of the OSI Model in computing. Physical / Data Link / Network / Transport / Session / Presentation / Application
Because the layers are numbered from the bottom-up, many mnemonics have been developed in both directions, from the top down and from the bottom up:
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- Please Do Not Throw Sausage Pizza Away starts at layer 1 (the bottom),
- Programmers Like Networks That Seldom Postpone Anything.
- Another commonly used mnemonic starts with layer 7; All People Seem To Need Data Processing.
The protocol data units (PDUs) for the OSI model can be remembered using:
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- Do Some People Fear Binary? (Data, Segment, Packet, Frame, Bit)
The hard-to-remember PCMCIA standard was ironically encoded as "People Can't Memorize Computer Industry Acronyms"
In the Linux kernel, a mneumonic to remember the Magic SysRq key sequence for safe reboot. unRaw / tErminate / kIll / Sync / Unmount / reBoot
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- Raising Elephants Is So Utterly Boring.
- Reboot Even If System Utterly Broken.
In CSS, a mnemonic for remembering the order of the shorthand versions of some selectors like border, padding, and margin is TRouBLe (Top, Right, Bottom, Left; {margin: Tpx Rpx Bpx Lpx;} ).
Read more about this topic: List Of Mnemonics