Understanding the Communication System Using Raised Dots

The question asks about a specific communication system for reading and writing that relies on using raised dots on paper. We need to identify the correct term for this system from the given options.

Let's analyze each option:

• OCR devices: OCR stands for Optical Character Recognition. OCR devices are used to convert scanned images of text into editable text data. They work with visual characters, not tactile raised dots. Therefore, this option is incorrect.
• Braille: Braille is a tactile writing system used by people who are blind or visually impaired. It is traditionally written with a stylus and slate or produced by a Braille writer or embosser. The system uses patterns of raised dots arranged in a 6-dot matrix (the Braille cell) to represent letters, numbers, and symbols. Readers use their fingertips to feel these raised dots. This description perfectly matches the communication system mentioned in the question.
• Technological aids: This is a very broad category that could include many tools, some of which might help with reading or writing for visually impaired individuals (like screen readers, magnifiers, or even electronic Braille displays). However, "Technological aids" is not the name of the specific system using raised dots on paper.
• Manipulative and tactile aids: This is another general category referring to tools that are physically handled and felt. While Braille involves tactile reading, this option describes a type of aid, not the specific communication system based on raised dots for reading and writing on paper.

Based on the analysis, the system that uses raised dots on paper for reading and writing is known as Braille.

Braille is a fundamental tool that provides literacy for blind and visually impaired individuals, allowing them to read books, write notes, and access information independently.