Toshiba Satellite C640 - Manual (Page 102)

User’s Manual 5-7
Satellite C600/C640/C645/C600D/C640D/C645D, Satellite Pro C600/C640/C600D/C640D
Generating ASCII characters
Not all ASCII characters can be generated using normal keyboard
operation, but you are able to generate these characters using their specific
ASCII codes.
1. Hold down ALT with the overlay on or ALT + FN with overlay off.
2. Using the overlay keys, type the ASCII code of the character you
require.
3. Release ALT or ALT + FN - the ASCII character will appear on the
display screen.