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Hi-Visibility features:

Large default screen display with easy full-screen option

Choice of four high contrast colour combinations:
Black on White, White on Black, Black on Yellow and Yellow on Black

All controls are accessed with large buttons, no small menus to navigate

All functions can be accessed with either the mouse or via keyboard shortcuts

Calculator features:

Add, Subtract, Multiply, Divide and find Square Root

Large, easy-to-read tool tips for all operations

Keyboard shortcut commands are outlined in the About menu ( click the ? key or press a)

Shortcut keys:

r to find the square root
\ to switch the +\- sign
c to change colours
s to change screen size
a for this About screen
q to quit
esc to clear everything
backspace to clear the last entry

Project Members:

• Hi-Visibility Software (admin)