RF keyboards differ from infrared keyboards in that they:
A. must be closer to the computer.
B. are connected to the computer via the USB port.
C. do not need to be pointed at the computer.
D. are used primarily on laptops or PDAs.
Answer:C
RF keyboards differ from infrared keyboards in that they:
A. must be closer to the computer. B. are connected to the computer via the USB port. C. do not need to be pointed at the computer. D. are used primarily on laptops or PDAs.