Figure1-4-2 Size of Main Board
1.5 Buttons
According to the different use of keys, all keys are roughly divided into
three categories: function keys, number keys and direction keys.
1.5.1 Function Keys
Function key is designed to directly realize a specific operation function.
Table1-5-1 Function Keys Instruction
No matter what the state of the machine is in,
pressing this button will make it enter the
resetting state.