Calculator with handwriting pad

A calculator with a handwriting pad, comprising a handwriting pad unit, a calculator unit, and a handwriting pen;

• wherein the handwriting pen is detachably arranged on the calculator unit or the handwriting pad unit, and the handwriting pad unit is connected to the calculator unit;
• when in a storage state, the handwriting pad unit and the calculator unit are arranged in an overlapped manner from up to down;
• when in an unfolded state, a surface of the handwriting pad unit is horizontally arranged side by side with the calculator unit,
• wherein the calculator with the handwriting pad further comprises a flexible connection wire;
• the calculator unit is equipped with a first circuit board and a first clear switch electrically connected to the first circuit board, and the handwriting pad unit is equipped with a first LCD screen;
• the calculator unit is provided with a first wiring hole on one side near the handwriting pad unit, and the handwriting pad unit is provided with a second wiring hole on one side near the calculator unit;
• the flexible connection wire passes through the first wiring hole and the second wiring hole, one end of the flexible connection wire is placed inside the calculator unit and soldered to the first circuit board, and an opposite end of the flexible connection wire is placed inside the handwriting pad unit and soldered to the first LCD screen;
• when the first clear switch is operated, the first circuit board clears a content displayed on the first LCD screen through the flexible connection wire;
• the calculator unit is further equipped with a first locking switch electrically connected to the first circuit board, and when the first circuit board receives an electrical signal fed back by the first locking switch, the first circuit board locks the content displayed on the first LCD screen through the flexible connection wire.

A calculator with a handwriting pad, comprising a handwriting pad unit, a calculator unit, and a handwriting pen;

• wherein the handwriting pen is detachably arranged on the calculator unit or the handwriting pad unit, and the handwriting pad unit is connected to the calculator unit;
• when in a storage state, the handwriting pad unit and the calculator unit are arranged in an overlapped manner from up to down;
• when in an unfolded state, a surface of the handwriting pad unit is horizontally arranged side by side with the calculator unit,
• wherein when the handwriting pad unit is connected to the calculator unit by one of the methods of rotation, magnetic attraction, buckle, and sliding,
• the handwriting pad unit comprises a first outer housing, a first battery, a first circuit board, and a LCD screen;
• the first circuit board, the first battery, and the LCD screen are all arranged inside the first outer housing;
• the LCD screen and the first battery are both electrically connected to the first circuit board, the first circuit board is positioned above or below the LCD screen, and a first display opening is defined in a surface of the first outer housing at a position corresponding to the LCD screen;
• the first circuit board is equipped with a clear switch, the first outer housing is equipped with a first pressing element at a position corresponding to the clear switch, the first pressing element is connected to the clear switch, and when the first circuit board detects an electrical signal fed back by the clear switch, the first circuit board controls the LCD screen to clear the displayed content;
• a locking switch is provided on the first circuit board, a first operating element is arranged on the first outer housing at a position corresponding to the locking switch, the first operating element is connected to the locking switch, and when the first circuit board detects an electrical signal fed back by the locking switch, the content displayed on the LCD screen is locked.