Technology can help students with impairments maintain or increase their functionality by providing tools like physical equipment, software, and electronic devices. Assistive technologies implemented in the classroom help blind students focus on learning without hindrance. These include talking calculators, speech recognition software, screen reading programs, reading machines, large print books, magnifiers, and tactile learning materials. Talking calculators have big buttons and vocalize numbers/operations to eliminate the need for students to squint. Speech recognition converts spoken words into documents, while screen readers produce audio versions of electronic text.