DISPLAY & KEYBOARD
FUNCTIONS
Used to enter all the numerical data.
Used to enter a double zero.
Used to clear erroneous entries and error conditions.
Used to display the daily total price.
Used to call the added total price.
Used to calculate a change.
Used to call up a indirect PLU.
Used to store a PLU to the memory.
Used to add up the price.
Used to cancel the price in the added total price.
KEYS DESCRIPTIONS