How does it work - with only 4 keys?!
Using our patented technology, characters are generated by
pressing either a single key or a combination of two keys
in what is called a composite keystroke.
A composite keystroke is performed by pressing two keys in a predefined order and then
releasing them in a predefined order.
There are two types of composite keystrokes:
Rocking Composite Keystrokes
If the key that was pressed second is the first to be released,
that is called a 'rocking keystroke', since it suggests a rocking motion
from one finger to the other and then back
Rolling Composite Keystrokes
If the key that was pressed first is also the first to be released,
that makes a 'rolling keystroke', since it suggests a rolling movement
of the hand from one finger to another
Click a character to see how to type it:
The advantage of the composite keystrokes is that they can be
remembered and used as just one keystroke, even if they consist of pressing
and releasing two keys.
Kee4 Keyboard Simulator
You can try and practice typing with the composite keystrokes using
the Kee4 Keyboard Simulator below.
Click in the text area and then use either the numeric keypad keys
1, 2, 3 and Enter (make sure Num Lock is on) or you can use the keys
v, b, n and m 12.
Simulator does not allow Control mode (key 4).
Switch to Advanced
to support all Operational Modes
Simulator supports changing Operational Modes
which provide numbers, uppercase, special and control characters.
The key map on the right shows the characters and mode transitions available in the currently active mode.
Use Cancel/Reset (three keys pressed at once) to return to Normal mode 12
See details below
A stand-alone Kee4 Simulator for PC is available for download.
All the lowercase characters of the English alphabet and the 'space' character are generated in
the Normal mode.
To support typing numbers, uppercase, special and control characters,
the Kee4 Keyboard uses a number of operational modes, including:
- Normal - lowercase characters
- Shift - uppercase characters
- Number - numbers and number-related special characters ('+', '%', etc.)
- Language - foreign language-specific characters ('ç', 'é', 'ñ', etc.)
- Control - cursor control and special characters
- Alternate - function keys, program specific characters 13
Press key 4 to enter the Control mode, followed by another single key to enter other modes.
See the complete map of all the mode transitions and all
supported characters here.
Unless the new mode is locked, the keyboard returns to the previous mode after a character is typed.
Locked modes stay in effect for multiple characters.
The Control mode lock applies only to some keystrokes 14.
To lock a mode press the key used to enter it twice.
To enter the Control Mode from any other mode, press the key number 4.
To return to the Normal
mode from any other mode, use the Reset
press any three of the four keys at the same time 12