Data processing and accessibility

Data processing and accessibility

1. Accesssbility devices

   • Trackball- easier to use for specially for people with disabilities, different type of mouse has a moveable ball base.
   • touch screen system and large keyboard - helps people who find it difficulty typing, give them more comfort when typing when using ordinary keyboard.
   • eye motion sensors and head motion sensors - utilized to help people with restricted mobility helps improve their accessibility.
   • braille embossers - a unique printer that outputs text as braille cells (characters)
   • Adaptive technologies
     • technologies which provides significant assist to those with disabilities which include both hardware Example:software. software accessibility is voice recognition as an input and screen reading software is an output.

2. Benefits

   • Peripheral devices have been designed to peform any specialist functions.

3. Manual and automatic data processing

   • peripheral devices to automate the input and processing of data without any error-prone activity like typos during data entry.
   • Automatic process devices
     • Biometric reader - examines hand prints, finger prints and irises for use of personnel identification systems.
     • Barcode readers - used to scan barcodes (lines of different thickness with values at the bottom) turn them and store into data or string values. 2D are able to read more type of QR-codes.
     • Optical Mark recognition (OMR) - used to read forms,suvryes or tests and input the data
     • Radio-frequency identification (RFID) - used for search,identify,track and communicate with items like smart cards and race timing systems.
     • Smart meters - accurately stores data of bill usage (electricity and gas) and reports it back to the energy supplier.
   • manual processors
     • entering username and password details into a log into a website or computer system
     • typing down customers meal choice into a restraunts system.
     • marking exams or documents
       • typing survey responses from written form,