From Robotics

A port contains a set of signal lines that the CPU uses to send or receive data with other components. Ports are usually used to communicate via modem, printer, keyboard, mouse, etc. In signaling, open signals are 1 and closed signals are 0. A parallel port sends 8 bits and receives 5 bits at a time. The serial port RS-232 sends only 1 bit at a time. However, it is multidirectional. So it can send 1 bit and receive 1 bit at a time. Parallel ports are mainly meant for connecting the printer to the PC. But this port can be programmed for many more applications beyond that.

Parallel ports are easy to program and faster compared to the serial ports. But the main disadvantage is that it needs more number of transmission lines. Because of this reason parallel ports are not used in long-distance communications. You should know the basic difference between working off a parallel port and serial port. In serial ports, there will be two data lines: one transmission and one receiving line. To send data in a serial port, it has to be sent one bit after another with some extra bits like start bit, stop...

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DC Motors
DC motors are most commonly used in variable speed and torque applications. They include brushless and gear motors, as well as servomotors.
Stepper Motors (rotary)
Stepper motors use a magnetic field to move a rotor in small angular steps or fractions of steps. They provide precise positioning and ease of use, especially in low acceleration or static load applications.
DC Servomotors
DC servomotors are generally small and powerful for their size, and easy to control. Common types of DC servomotors include brushless or gear motors.
Tactile Pressure Sensors
Tactile pressure sensors are used to detect the pressure distribution between a sensor and a target.
Capacitors are electronic components used for storing charge and energy. In their simplest form, capacitors consist of two conducting plates separated by an insulating material called the dielectric.

Topics of Interest

RS-232 is the most known serial port used in transmitting the data in communication and interface. Even though a serial port is harder to program than the parallel port, this is the most effective...

Attenuators Many times we are faced with the problem of needing a particular voltage for an application but the signal generator (or any other source) will not produce the desired voltage level. ...

General Amplifier Concepts An amplifier can be represented as a two-port device.  The two ports are called input and output.  Each port has two terminals, and in general one of the terminals...

A transistor is a three-terminal semiconductor device that is extremely versatile.  In the modern world of today very seldom you will find an electronic device that in some way or another does...

Integrators and differentiators are circuits that simulate the mathematical operations of integration and differentiation.  It is not necessary for you to understand these operations now to be...

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