The keyboard is mainly composed of a key cap and a circuit board set below.The keyboard circuit board is the control core of the entire keyboard, located inside the keyboard, responsible for scanning the keyboard position, coding and transmitting signals to the computer.
When the keyboard is pressed, the plunger sinks, causing two previously disconnected circuits to close to form a path, and then scans the position in the microprocessor to determine which keyboard is responsible for the press.
After the microchip is connected to the circuit board, the worker tests the connection line and confirms that the signal can be transmitted through the aluminum wire.
After passing the test, cover the microchip with vinyl to protect the contact and insulate it.
Assemble the circuit board and control the current flow and signal flow on the circuit board according to the original printed mark on the circuit board and the corresponding capacitance and resistance.
There are also three LED lights for caps lock, number lock and scroll lock.
Once installed, the circuit board is fed into the oven and passed through a liquid tin wave, which attaches to the wire and the solder pad on the circuit board, and the electronic components are welded to the circuit board for fixation and connection.
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