Class 10 Session 1 Working Accessibility option | Web Application notes

Hello friends we come back with New unit Web Application with Session 1 working with Accessibility options, in this chapter we were learn accessibility option of our computer system regardless of their disability. In this chapter we will learn basic Accessibility option available on our computer system like keyboard, mouse etc. Let start exploring each and every topic related to Accessibility option.

Session 1: 

Working with Accessibility Options:

Computer Accessibility refers to the user friendliness of a computer system for all, regardless of their disability. this is mainly a software issue. However, when a combination of hardware and software, it enables a person with a disability or impairment to use a computer. it is known as Assistive technology. in this session, you will learn about the basic accessibility options available on your computer. 

There are numerous types of impairment that impact computer usage. these include:

• Cognitive impairments and learning disabilities, such as dyslexia, attention defcit-hyperactivity disorder (ADHD) or autism. 
• Visual impairment such as low-vision, complete or partial blindness, and color blindness. 
• Hearing impairment including deafness.
• Motor or dexterity impairment such as paralysis, cerebral palsy, or carpal tunnel syndrome and repetitive strain injury.

Accessibility Options in Control Panel are used to customize the way your keyboard, display, or mouse function. Many of these features are useful for people with disabilities as discussed earlier. in this session, you will learn to use accessibility options in Windows 7 or windows 8 and windows 10  or upcoming windows version.

Launching accessibility options  

To launch accessibility optionsin Windows XP, 

Control Panel > Accessibility options. the Accessibility Options window appears.

To launch accessibility optionsin Windows 7, 

Click Start > Control Panel > Ease of Access> Ease of Access Center

 

Keyboard Tab 

StickyKeys StickyKeys is an accessibility feature to help computer users with physical disabilities, but it is also used by others as a means to reduce repetitive strain. StickyKeys allows the user to press and release a modifer key, such as Shift, Ctrl, Alt, or the Windows key, and have it remain active until any other key is pressed.

 To enable StickyKeys, select Use StickyKeys. 

• Click Apply. 
• Click OK. 
• The StickyKeys icon appears in the system tray (figure)

After having enabled StickyKeys, you W’ll now practice and see its effect.  Start Notepad. 

To do so, click Start > All Programs > Accessories > Notepad. 

• Type some text (3 - 4 lines at least) and place the cursor at the beginning of the text. 
• Press CTRL key on your keyboard.
• Press letter A on your keyboard. 
• Notice the entire text gets selected. This action is equivalent to pressing CTRL+A simultaneously!

 TO  disable StickyKeys, uncheck Use StickyKeys and then click on Apply > OK.

FilterKeys 

FilterKeys is a feature of Microsoft Windows. it is an accessibility function that tells the keyboard to ignore brief or repeated keystrokes, making typing easier for people with hand tremors. 

• To enable FilterKeys, check Use FilterKeys. 
• Click Settings under FilterKeys and check “Ignore Repeated Keystrokes”. 
• Click Apply. 
• Click OK

After having enabled FilterKeys, you will now practice and see its effect.
• Start Notepad and type some repeated characters.
notice that the repeated characters are ignored.

ToggleKeys 

ToggleKeys is also a feature of Microsoft Windows. it is an accessibility function which is designed for people who have vision impairment or cognitive disabilities. When toggleKeys is turned on, computer emits sound cues when the locking keys (Caps Lock, num Lock, or Scroll Lock) are pressed. A high sound is emitted when the keys are switched on and a low sound is emitted when they are switched off. 

• To enable ToggleKeys, Check Use ToggleKeys.
• Click Settings under toggleKeys.
• Click Apply.
• Click OK. 

Having enabled toggleKeys, you can see its effect by any one of the following keys nUM LOCK, CAPS LOCK or SCROLL LOCK. notice that on doing so, you hear a beep. 

To disable toggleKeys, uncheck Use ToggleKeys and then click on Apply > OK.

Sound Tab 

Select the Sound tab. A window with options to confgure accessibility options for sound is displayed (fgure 4). SoundSentry SoundSentry is designed to help users with auditory impairments. SoundSentry generates visual warnings, such as a blinking title bar or a flashing border, whenever the computer generates a sound.

• To enable SoundSentry, Check Use SoundSentry under Sound tab. Doing so activates a drop down list wherefrom you can choose the type of visual warning desired. 
• Click Apply. 
• Click OK. 

For understanding SoundSentry, you need to create an error! 

Click Start> Run. type note instead of notepad and press Enter

Display Tab 

Select the Display tab. A window with options to confgure accessibility options for display is displayed. High Contrast High Contrast is an accessibility feature to assist people with vision impairment. You can change the size and color of fonts and the background for ease of viewing. 

• To enable HighContrast, Check Use HighContrast Under Display Tab 
• Click Apply. 
• Click OK. 

notice the difference on your monitor as the High Contrast option is enabled. 

To disable High Contrast, uncheck Use High Contrast > Apply > OK.

Cursor options 

Cursor Options is also an accessibility feature that assists people with vision impairment by changing the blink rate and width of the cursor. 

• To change the speed of the cursor blink, move the Blink Rate slider back and forth. notice the cursor blinking at various speeds.
• To change the width of the cursor, move the Width slider back and forth. notice the with of the cursor changing.

Mouse Tab 

mouseKeys MouseKeys is an accessibility feature that assists people who have diffculty using a mouse. This option uses the keyboard (especially numeric keypad) as a pointing device instead of a mouse. Select the Mouse Tab, a window to confgure accessibility options for mouse will be displayed (Figure 6). 

• To enable MouseKeys, Check Use MouseKeys. 
• Click Apply.
•  Click OK

Use number pad keys for moving mouse pointer instead of using mouse after enabling “Use MouseKeys”. Use number key 4 to move left, 6 to move right, 2 to move down and 8 to move up. 

to disable MouseKeys, uncheck Use MouseKeys and then click on Apply > OK.