You can connect a keyboard to your computer using a wired or a wireless connection.
Wired: The keyboard is connected to the computer using a cable and does not require additional power source, such as batteries. The connection can be
using any of the following:
USB — Used in all current generation computer.
PS/2 port — Used on older computers.
Wireless: Keyboard is connected to the computer using wireless signals. This connection method reduces cable clutter and gives you the flexibility to use the
keyboard from a more comfortable position within a few meters from the computer. Such keyboards require batteries to operate and some wireless
keyboards have rechargeable batteries. The wireless connection can be any of the following:
Radio Frequency (RF) — An RF receiver is connected to the USB port on the computer.
Bluetooth — The keyboard connects to the computer using the Bluetooth adapter already installed in your computer or using a Bluetooth adapter