Definition
Videotex is an early form of an interactive information retrieval service that transmits data to users’ television screens via telephone lines. This system enables users to access, retrieve, and interact with various types of information through a terminal that includes a keyboard and a display unit. Typically, videotex systems are used for purposes such as ordering products, conducting banking transactions, and retrieving news or other information.
Examples
- Home Banking: Using a videotex service to view bank account balances, transfer funds, or pay bills from home.
- Online Shopping: Sending an order to suppliers for grocery delivery or other goods by entering data into the videotex system.
- Information Services: Accessing news, weather reports, or general information through a videotex service offered by service providers.
Frequently Asked Questions
Q: What is the main advantage of videotex systems?
A: The main advantage is the interactive functionality, which allows users to enter commands and receive responses in real-time, making processes such as banking or shopping more convenient from home.
Q: How does videotex differ from teletext?
A: While both involve transmitting text over broadcast lines, teletext is generally non-interactive and only allows users to view information, whereas videotex systems facilitate user interaction by allowing data entry.
Q: What kind of technology is used for videotex transmissions?
A: Videotex systems typically employ standardized protocols and telephone lines or other telecommunications infrastructure to transmit data between the user’s terminal and the service provider’s computer.
Q: Are videotex services still in use today?
A: While the popularity of videotex services has waned with the advent of the Internet, some specialized applications such as home banking systems evolved into modern digital services.
Related Terms
- Teletext: A one-way data broadcasting system that allows users to retrieve information like news, weather, and stock prices but does not support interactive functions.
- HTTP/HTML: Technologies used for data transmission and display over the World Wide Web, which replaced videotex systems.
- Modem: A device that modulates and demodulates signals for data transmission over telephone lines, often used in videotex systems.
- Electronic Data Interchange (EDI): A system that allows the exchange of data between companies’ computer systems in a standard electronic format.
Online References
Suggested Books for Further Studies
- “Telecommunication and Data Center Networks: Architectures, Algorithms and Performance Evaluation” by Yin Zhang, Min Chen
- “The Internet and Its Protocols: A Comparative Approach” by Adrian Farrel
- “Telecommunication Networks: Introduction to Transport Networks” by Eugenio Iannone
Fundamentals of Videotex: Telecommunications Basics Quiz
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