Chapter 2 Hardware Basics

By qwams1239, Sep 2011

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Arithmetic Logic Unit (ALU)	Sector of the CPU that preforms the mathematical calculations that are required in many data processing programs
PAC Mate	PDA designed for blind or low vision users. Traditional PDA stylus is replaced by a choice of keyboards such as Speech only, Perkins, QWERTY, or Braille, and JAWS screen reading tech.
Key-guards	Hard plastic covers with holes for each key. Good for unsteady hands and or someone who uses a pointing device, keeps from pressing wrong key
Speech Output Software	Audibly speaks screen content and commands for blind students
Refresh-able Braille Display	Hardware device that presents a line of text from the screen in braille formate by raising pinpoints under a membrane. Pinpoint is than cleared when next line of text is displayed
Firewire ports	provide a very fast connection to transfer large amounts of data quickly.
Document Cameras	Very versatile presentation tool. They display slides, transparencies, text, documents, 3D objects, and microscopic objects
Dots per inch (dpi)	Way of measuring a printers resolution.
Classroom response system or "clicker"	handheld device that resembles a TV remote that allows students to respond to questions from the teacher. Sends students answer in real time.
Interactive whiteboards	21st blackboard. Can be drawn on and used much like a computer, even taking notes and emailing to students so they can view at home.

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