light pen: meaning, definition, pronunciation and examples
RareTechnical / Historical
Quick answer
What does “light pen” mean?
A hand-held light-sensitive input device that can be used to select text or draw directly on the screen of a computer or other electronic display.
Audio
Pronunciation
Definition
Meaning and Definition
A hand-held light-sensitive input device that can be used to select text or draw directly on the screen of a computer or other electronic display.
An obsolete input tool, historically used with computer-aided design (CAD) and graphics systems, which detects light emitted from the CRT screen to determine its position.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning. The term is equally technical and dated in both varieties.
Connotations
Strongly associated with early computing, 1970s-1980s mainframe and personal computer technology. Connotes obsolescence.
Frequency
Extremely low frequency in contemporary use. Appears primarily in historical or technical discussions of computing evolution.
Grammar
How to Use “light pen” in a Sentence
use [the/your/a] light pen to [draw/select]connect [the] light pen to [the computer/terminal]point [the] light pen at [the screen/object]Vocabulary
Collocations
Examples
Examples of “light pen” in a Sentence
verb
British English
- The designer will light-pen the new schematic.
American English
- She light-penned the corrections directly onto the display.
adverb
British English
- He worked light-pen-in-hand on the old CAD system.
American English
- The menu was designed to be selected light-pen quickly.
adjective
British English
- The light-pen interface was revolutionary for its time.
American English
- It required a light-pen controller card installed in the PC.
Usage
Meaning in Context
Business
Virtually never used in modern business contexts.
Academic
May appear in historical analyses of human-computer interaction or the evolution of input devices.
Everyday
Never used in everyday conversation unless discussing old technology humorously.
Technical
Used precisely to refer to the specific historical device in computing history, electronics, or HCI literature.
Vocabulary
Synonyms of “light pen”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “light pen”
- Using 'light pen' to refer to a modern stylus for a tablet or smartphone.
- Spelling as one word 'lightpen'. While sometimes seen, 'light pen' is the standard form.
FAQ
Frequently Asked Questions
No. A modern stylus (like for a tablet) works via capacitive or resistive touch, or Bluetooth. A light pen was a light-sensitive device that only worked with the specific phosphor glow of a CRT screen.
They saw their peak usage from the 1960s through the 1980s, particularly in computer-aided design, graphics workstations, and some early personal computers.
The rise of the graphical user interface (GUI) made the mouse a more versatile and cheaper pointing device. Furthermore, light pens were tiring to use ('gorilla arm'), worked only with CRTs, and were less precise than later alternatives.
New light pens are essentially not manufactured for modern computers. They can occasionally be found as vintage or collector's items for retro computing enthusiasts.
A hand-held light-sensitive input device that can be used to select text or draw directly on the screen of a computer or other electronic display.
Light pen is usually technical / historical in register.
Light pen: in British English it is pronounced /ˈlaɪt ˌpen/, and in American English it is pronounced /ˈlaɪt ˌpɛn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “As obsolete as a light pen”
Learning
Memory Aids
Mnemonic
Imagine a pen that needs LIGHT from an old TV screen to work—a LIGHT PEN.
Conceptual Metaphor
A pen (tool for writing/drawing) that is a sense organ (it 'sees' light).
Practice
Quiz
What was a primary limitation of the light pen?