What are the five joysticks on the crane?

The first lever rotates left and right,

The second rod is a telescopic arm,

Roof of the world is a horn, that is, a derrick climber.

The fourth pole is a small hook and falls.

The fifth is the hook.

Extended data:

Joystick is a kind of physical equipment that converts the movement of plastic rod into electronic information that can be processed by computer. The basic principle of joystick is to convert the movement of plastic rod into electronic information that can be processed by computer.

The basic principle of joystick is to convert the movement of plastic rod into electronic information that can be processed by computer. This basic design includes a joystick mounted on a plastic base with an elastic rubber shell. The circuit board is installed directly under the joystick in the base. The circuit board consists of some "printed lines" which are connected to several contacts. Then, connect the ordinary wires of these contacts to the computer.

The printed circuit constitutes a simple circuit (composed of some smaller circuits). These lines only carry current from one contact to another. When the joystick is in the middle position, that is, when you don't push the joystick to either side, all the circuits except one are disconnected. There is no current in the circuit because the conductor materials in each line are not completely connected.

The top of each disconnect is covered with a simple plastic button with a small metal disk on it. When you move the joystick in any direction, the joystick will press one of the buttons down, so that the conductive foil will touch the circuit board. In this way, the circuit can be closed and the connection of two circuit parts can be completed. After the circuit is closed, the current will flow out from the computer (or game machine) along one line, through the printing line, and then back to the computer (or game machine) through another line.

Each voltage divider consists of a resistor in the form of a coil rail and a movable contact arm. The current of the computer power supply starts from the input end and flows back to the joystick port of the computer through the curled resistor and the contact arm.

Moving the contact arm along the guide rail can increase or decrease the resistance value of the current flowing through the circuit. If the contact arm is located at the other end opposite to the input connection end of the voltage divider, the current will flow through the resistance of the whole length, so the current will encounter the maximum resistance. If the contact arm is close to the input end, the resistance of the voltage divider is the smallest.

Each voltage divider is connected to a shaft of the joystick, so the rotating shaft moves the contact arm. That is to say, if the joystick is pushed forward to the end, the contact arm of the voltage divider will move to one end of the guide rail, and if the joystick is pulled back to the chest, the contact arm will move in the other direction.

Changing the resistance of the voltage divider can change the current in the circuit connected to the voltage divider. In this way, the voltage divider first converts the physical displacement of the joystick into an electrical signal, and then transmits the signal to the joystick port on the computer.

This kind of electrical signal is completely analog. It is a waveform containing information changes, just like a radio signal. In order to use this information, the computer needs to convert it into digital information, that is, accurate numerical values.

References:

Baidu encyclopedia-joystick