The below flow diagram explains the Sale transaction flow and this is an example for Retail application type.
Orange boxes represent prompts/screens shown on the device and Purple boxes represent work being done by business logic of the application.
Device Series Keypad
Device Keypad
Keypad
Description
M440 device keypad
P400 device keypad
e285 device keypad
Color-Coded Function Keys
Keys
Description
The color-coded keys perform specific tasks. These keys may differ in shape and have text on them as seen in the graphics, however the function for each key remains the same.
Red Cancel Key: Press this key to cancel the current operation.
Yellow Clear Key: The action of this key will depend on its placement in the prompt sequence. Pressing this key will typically clear text.
Green Enter Key: This key is used like the Enter key. Press this key to signify that the task is complete, or press to enable a function or perform an action based on typed data.
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