Big Red Switch

BRS or Big Red Switch is a phrase used to describe an immediate shut down of a system using the main or emergency power switch (e.g., “Hit the BRS”). The term originated from the emergency pull switch on an older IBM mainframe or the power switch on an older IBM PC, which is a large red button. Today, it is considered to be hacker slang for any computer power button or switch.

Webopedia Staff
Webopedia Staff
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

Related Articles

DocuSign

What is DocuSign? DocuSign is an agreement management application that enables businesses to create, send, and automate a wide variety of forms and contracts and...

Compliance

What is compliance? Compliance or regulatory compliance is a term used across industries to describe rules and policies that prohibit or regulate specific products, services,...

User Experience

User experience describes a user's interaction with products, systems, and services and includes usability, design, navigation, and impression.

Management Information Systems (MIS)

What is a Management Information System? A Management Information System (MIS) is an information system that provides managers with the tools to effectively organize, evaluate,...

Venture Capital

Venture capital (VC) offers startups and developing businesses growth opportunities with funding from...

Third-Party Apps

A third-party application is an application provided by a vendor other than the...

Ernst & Young (EY)

Ernst & Young Global Limited, commonly known as EY, is a multinational professional...