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Types of Hardware

An Example of a Serial Port
An Example of a Serial Port

The Arduino Leonardo board uses Serial1 to communicate via TTL (5V) serial on pins 0 (RX) and 1 (TX). Serial is reserved for USB CDC communication. For more information, refer to the Leonardo getting started page and hardware page.

source: arduino.cc
image: pcmag.com
Close-up of a Sound Card
Close-up of a Sound Card

Audio hardware has gone from being an expensive, exotic add-on to being an assumed part of virtually any system configuration. Today's PC audio hardware might take one of the following forms: An audio adapter on a PCI expansion card that you install into a bus slot in the computer.

Graphics Card
Graphics Card

Graphics hardware is computer hardware that generates computer graphics and allows them to be shown on a display, usually using a graphics card in combination with a device driver to create the images on the screen.

Inside a Personal Computer
Inside a Personal Computer

Computer hardware is the collection of physical parts of a computer system. This includes the computer case, monitor, keyboard, and mouse. It also includes all the parts inside the computer case, such as the hard disk drive, motherboard, video card, and many others. Computer hardware is what you can physically touch.

source: study.com
Network Interface Card
Network Interface Card

A network interface card (NIC) is a circuit board or card that is installed in a computer so that it can be connected to a network. A network interface card provides the computer with a dedicated, full-time connection to a network.