List of Mnemonics - Computing

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:

• 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:

• 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

• 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;} ).