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Cardiac-eu.org

Checklist for Computer Hardware

No significant benefits No significant benefits
Minor benefits Minor benefits
Major benefits Major benefits
User Groups
Visual
Hearing
Physical
Cognitive
Ageing
           
Controls          
The surface of the controls does not contain any material which may cause an allergy
Major benefits visual
Major benefits hearing
Major benefits physical
Major benefits cognitive
Major benefits ageing
Controls are operable with one hand
No significant benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
Controls are placed so that they are easily reached by a person in a wheelchair
No significant benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
Controls are well spaced so that they are not activated by mistake
Major benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
Controls are tactilely discernible without activating them
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Controls are tactilely marked so that control setting is easily identified
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Audio or tactile feedback is provided for activation of controls that do not have any physical travel
Major benefits visual
Major benefits hearing
Minor benefits physical
No significant benefits cognitive
Minor benefits ageing
The size, shape and surface of controls are easily grasped
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
Labels are of high contrast, clear and as large as possible
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Operation of a control should not require more than 2 Newtons*
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
Push button controls require less than 100 grams of pressure**
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
           
Keyboards and Keypads          
All commands and options can be accessed by using the keyboard
Major benefits visual
Minor benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
The keyboard should be detachable and have a sufficiently long cable, so it can be placed according to user's needs
Minor benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The keyboard is of low-profile type, i.e. the height of the key-row beginning A-S should not be greater than 30mm.
Minor benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
There is good friction between the keyboard and the desktop
Minor benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The key tops are matt
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The surface of the keytops is concave
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The user receives tactile and audible feedback when pressing a key
Major benefits visual
Major benefits hearing
Minor benefits physical
No significant benefits cognitive
Minor benefits ageing
Groups of keys are separated by distinct spaces
Major benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
Groups of keys are distinguished by different colours
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
The F, J and 5 keys are marked with a tactile identification
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Frequently used keys, such as Enter, Shift, Escape, Ctrl, Backspace etc. have a shape that differs from other keys
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
There is high contrast between the colour of the character and the background of the keytop
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
The height of the characters is not less than 4mm
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
The text on the keys should be printed in sans-serif font
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Text is not printed in red or green
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
The user can customise the keyboard with respect to features such as repeat rate, key activation delay, delay between acceptance of two consecutive key presses, minimum time for pressing a key before the key repeat begins, and serial instead of multiple simultaneous keystrokes etc.
Major benefits visual
No significant benefits hearing
Major benefits physical
Major benefits cognitive
Minor benefits ageing
If key repeat is supported, the delay before repeat should be adjustable to at least 2 seconds per character
Major benefits visual
No significant benefits hearing
Major benefits physical
Major benefits cognitive
Minor benefits ageing
If sufficient space is available, shift keys (upper and lower case, ctrl, alt etc.) should be duplicated, one on each side of the keyboard, and be placed symmetrically
Major benefits visual
No significant benefits hearing
Major benefits physical
Major benefits cognitive
Minor benefits ageing
The system allows the connection of two keyboards, which could be used simultaneously
Major benefits visual
No significant benefits hearing
Major benefits physical
Major benefits cognitive
No significant benefits ageing
The power to press a key should be between 0.3 and 0.6 Newton***
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
           
Pointing devices          
The user can execute pointing functions from the keyboard
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The user can modify cursor speed, distance and double-click interval
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
Operation of a pointing device does not require two simultaneous hand movements
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The power needed to operate a pointing device should be between 0.3 and 0.6 Newton
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
           
Drives and removable media          
Mechanisms for inserting and removal of drives and removable media should require a minimum of muscular strength, range of motion, reach and movement precision
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The user is alerted of incorrect insertion
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
           
Displays          
Screens should have a frequency greater than 2Hz and lower than 55Hz to avoid flicker
Major benefits visual
No significant benefits hearing
Major benefits physical
No significant benefits cognitive
Minor benefits ageing
The typeface should be clear and legible
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
The display has good contrast
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
Glare on the display is minimised
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
The display can be separated from the device so it can be placed in an accessibile position or replaced by another better suited to the user's needs
Major benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
The display provides an easy mechanism for altering its angle, height etc.
Major benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
           
Colour and contrast          
Users can select and adjust the colours and contrast used on the display
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
           
Audio output          
Audio output is supplemented by captioning or subtitles
No significant benefits visual
Major benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Signals from the basic system, such as alarms, warnings, status lamps and error messages are available in alternative forms
No significant benefits visual
Major benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
The volume, pitch and frequency of signals from the basic system, such as alarms, warnings, status lamps and error messages are adjustable
Minor benefits visual
Major benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
The volume can be reset to a default level
No significant benefits visual
Major benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
Warnings and similar alert messages must remain stable for a sufficiently long time to be discovered by the user
Major benefits visual
Major benefits hearing
Major benefits physical
Major benefits cognitive
Major benefits ageing
Internal speaker units are located at the front of the computer and directed towards the user
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
An industry standard connector for headphones or personal listening devices is provided
Major benefits visual
No significant benefits hearing
No significant benefits physical
No significant benefits cognitive
Minor benefits ageing
           
External connections          
Tactile indication is provided on any plug or insert and its corresponding connection point
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
A bevel around the slot or connection point is provided
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
Serial and parallel interface connectors, data buses, keyboard connectors and other data transfer mechanisms such as infrared technology or radio, follow existing standards or de facto standards
Major benefits visual
Major benefits hearing
Major benefits physical
Major benefits cognitive
Major benefits ageing
Connection points e.g. USB ports are located on the front of the computer
Major benefits visual
No significant benefits hearing
Major benefits physical
Minor benefits cognitive
Minor benefits ageing
           
Peripheral devices          
A system purchased with the expectation that it will now or in the future be used by a user who needs an assistive device should have the maximum number of serial ports, parallel ports and expansion slots
Major benefits visual
Major benefits hearing
Major benefits physical
Major benefits cognitive
Major benefits ageing
           
Instruction manuals / documentation          
Simple, clear concise language is used
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
There is a table of contents and an index
Major benefits visual
No significant benefits hearing
No significant benefits physical
Major benefits cognitive
Minor benefits ageing
The instructions are task orientated
Minor benefits visual
No significant benefits hearing
No significant benefits physical
Major benefits cognitive
Minor benefits ageing
Information is available in alternative formats
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
Documentation is provided in alternate modes of delivery (e.g. fax, Internet, email)
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
A good legible typeface is used
Major benefits visual
No significant benefits hearing
No significant benefits physical
Minor benefits cognitive
Minor benefits ageing
Information contained in pictures is also explained in the text
Major benefits visual
No significant benefits hearing
No significant benefits physical
Major benefits cognitive
Minor benefits ageing

*According to the Nordic Cooperation on Disability (1998) operation of a control should not "require more power than 2 Newton". See Computer Hardware guideline for references.

** The Design Considerations Task Force of the Industry/Government Cooperative Initiative on Computer Accessibility (1988) states that push button controls should require "less than 100 grams of pressure". See Computer Hardware guideline for references.

***According to the Nordic Cooperation on Disability (1998) the power to press a key should be "between 0.3 and 0.6 Newton". See Computer Hardware guideline for references.

Checklist for Controls
Checklist for Displays
Checklist for Keys