Which statement is valid about computer program?

What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?

Which of the following produces the best quality graphics reproduction ?

Once you load the suitable program and provide required data, computer does not need human intervention. This feature is known as

To produce high quality graphics (hardcopy) in color, you would want to use a/n