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Figure 4. Row and Column keyboard
In an alphanumeric keyboard, A01 and B01 can be identified as SHIFT and
CONTROL on the right side of the keyboard as shown in figure 5.
Figure 5. Alphanumeric keyboard layout
3. Plug the keyboard back into the computer while you keep holding down A01
and B01.
4. All the lights on the keyboard (if available) will turn on and the keyboard
acknowledges you that a reset has been performed by producing a single bip
sound. After that, Accept light will turn on and off.
5. Now, you can release keys A01 and B01 and start using the keyboard normally.
Important: If you have an RS232 interface keyboard, then you will need to press
A01+D01 instead of A01+B01. D is the fourth row up from the bottom of the
keyboard and 01 the first column