In information technology

Information technology

Information technology is the acquisition, processing, storage and dissemination of vocal, pictorial, textual and numerical information by a microelectronics-based combination of computing and telecommunications...

, Questar computer terminal

Computer terminal

A computer terminal is an electronic or electromechanical hardware device that is used for entering data into, and displaying data from, a computer or a computing system...

s are a line of largely 3270-compatible text-only dumb terminals manufactured by Groupe Bull

Groupe Bull

-External links:* * — Friends, co-workers and former employees of Bull and Honeywell* *...

 and widely used in France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 and some other markets. The terminals combine standard 3270 emulation with a number of Questar-specific features. The terminals have been most successful with users who already operate compatible Bull mainframe systems, and have achieved far less market penetration as plug-compatible

Plug-compatible

A plug-compatible machine is one that has been designed to be backwards compatible with a prior machine. In particular, a new computer system that is plug-compatible has not only the same connectors and protocol interfaces to peripherals, but also runs the same CPU software as the old system...

 replacements for IBM

IBM

International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

 3270 terminals.

Trivia

• In Paris, France, the turnstile
  Turnstile
  A turnstile, also called a baffle gate, is a form of gate which allows one person to pass at a time. It can also be made so as to enforce one-way traffic of people, and in addition, it can restrict passage only to people who insert a coin, a ticket, a pass, or similar...
  
  s used in the subway system contain Questar emulators that communicate with a central computer system.