1-2
k Key Markings
  Many of the calculator’s keys are used to perform more than one function. The functions 
marked on the keyboard are color coded to help you find the one you need quickly and easily.
  
  
  
  
  
  
  
  Function   Key Operation  
1
 log 
l
2
 10 
x  
!l
3
 B 
al
  
  The following describes the color coding used for key markings.
  Color   Key Operation  
 Yellow 
 Press  ! and then the key to perform the marked function. 
 Red 
 Press  a and then the key to perform the marked function. 
  
  •   Alpha Lock 
    Normally, once you press  a and then a key to input an alphabetic character, the keyboard 
reverts to its primary functions immediately. 
If you press  ! and then  a, the keyboard locks in alpha input until you press  a again.