Trivia

Hard

Which Common Computer Symbol Is Based Off The Binary System?

USB
Bluetooth
Firewire
The Power Button
The multi-state power button from a 2007-era MacBook Pro.
Vincentq/Wikimedia

Answer: The Power Button

The international symbol for power buttons is a simple circle intersected at the top by a line. This symbol is the fourth evolution of the standard for power buttons since the 1940s. Early computer and electronic systems had toggle switches that were simply labeled On and Off on the respective sides of the toggle.

This standard was replaced fairly quickly in an effort to make switches universal across languages. On and Off were replaced with the numerals 1 and 0, a nod to the binary system, indicating the power was on (1) or the power was off (0). When toggle switches were replaced by push buttons, the symbol evolved again, this time to a circle with a line in the center indicating that the single button was capable of turning the machine on and off.

The introduction of lower-power states (such as the standby mode on modern computers) necessitated a fourth revision. The most recognizable iteration of the symbol, a circle broken by a vertical line, indicates that the button can power a machine on, off, or enter it into a power saving state. The photo here shows such a power button—with an on/off/standby design—on an older model MacBook Pro.

Trivia

Hard

Which Classic Boardgame Has Been Solved For All Possible Outcomes?

Trivia

Hard

A Syzygy Is A Rare Event In What Two Distinct Categories?

Trivia

Hard

The Largest Known Freshwater Flood In All Of History Is Known As The?

Trivia

Easy

Which Actor Changed His Name To Avoid His Family’s Fame?

Trivia

Hard

The First Wearable Computer Was Used For?

Trivia

Hard

The First Radio Jingle Was An Advertisement For Which Of These Products?

Trivia

Hard

Teleprompters Are A Practical Use Of An Old Illusionist’s Trick Known As?

Trivia

Hard

The Term “Dungeon Master” Belongs To Which Company?

Trivia

Hard

The Largest Living Turtle Species Is The?

Trivia

Hard

Which Game Console Was The First To Have Downloadable Content?