ER-A850. Training Tape Transcipt (Jan1998) - Sharp EPOS Handy Guide. Page 10

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The bucket type between A and E is also used with the mix & match
offer this will allow you to set up an offer so if  you buy 2 of one type of
product and 3 of another type you get £1.00 off.
The mix & match offers will be explained in more detail later.

To save any changes and escape from this screen press the end key
until the sub menu appears.

This procedure of end to save the details and end to return to the sub
menu applies after each screen is finished with.

This ends the product file maintenance.

The next product on this sub menu is keyboard file, this is called screen
files on the up5700. Please select this choice

The only real difference between these EPoS models is with respect to
the keyboards, or screens as they are referred to on the UP5700.

First we will discuss the 850 and the 880 keyboards, then we shall look
at the UP5700 which is more powerful and flexible.

The 850 and the 880 can have Up to 9 keyboards.
Each keyboard has 2 levels.

You would select the keyboard number you want to program, followed
by the keyboard type, whether it is for the 850 or  the 880, then you will
select lower or upper level for each keyboard.

A keyboard shift button can then be allocated for use by the Server to
get quick access to the second level.
    

The ERA850 has 156 key positions.