Definition
The smallest unit of information in a digital system, representing one of two possible states: 0 or 1. Bits are combined in groups to represent numbers, characters, and instructions inside aircraft computers and avionics.
Plain English
A bit is a single yes-or-no piece of information. Computers handle everything by stringing many of these tiny on/off signals together.
Context Anchor
Seen in aircraft maintenance instructions, tool lists, and hangar work when drilling holes or removing and installing screws.
Derivation
Short for 'binary digit.' 'Binary' comes from Latin 'binarius,' meaning 'consisting of two,' which fits exactly: a bit has two possible values.
Why Pilots Care
Using the wrong bit can damage a screw, make a hole the wrong size, or harm aircraft material during maintenance work.
Analogy
Think of a light switch: it's either on or off. A bit is the same idea — one switch, two possible positions. Computers just use millions of them at once.
Intuition Check
A bit does not mean “a small amount” here. In this context, it means the removable working tip of a tool.
Example Sentence 1
Each character displayed on the GPS screen is built from a string of bits processed by the unit's computer.
Example Sentence 2
A single bit error in the navigation database can affect position calculations.