What does 'OS' stand for in computing?
AnswerOperating system
An operating system manages a computer's hardware and runs other programs.
Tech · Facts & stats
Software facts & stats
7 fact-checked facts about software and how it works, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
In software, what is a 'bug'?
AnswerAn error that makes a program behave wrongly
A bug is a flaw in code that causes incorrect or unexpected results.
Going deeper
What is open-source software?
AnswerSoftware whose source code is available to use, study, change and share
Open-source licenses let anyone view, modify and redistribute the source code.
What does a compiler do?
AnswerTranslates source code into machine code
A compiler converts code written by people into instructions a computer can run.
What is version control used for in software development?
AnswerTracking changes to code over time
Version control records every change so teams can compare, merge and roll back code.
Expert level
In 1947, what was found in a Harvard Mark II computer relay and logged as the 'first actual case of bug being found'?
AnswerA moth
Operators taped a moth into the logbook after it was found stuck in a relay of the Harvard Mark II.
In programming, what does 'refactoring' mean?
AnswerRestructuring code without changing what it does
Refactoring improves code's structure and readability while keeping its external behavior the same.
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