Why do we have to install different device drivers for different operating systems for a particular i/o device?

What is the most popular genre of video games?

People with high self-esteem: accept their strengths and weaknesses. believe that failed experiences are failures of their whole self. feel good about who they are only when they reach total success. need positive external experiences to counteract negative feelings that constantly plague them.

In a word processing program, such as microsoft word, which feature to you choose the desired picture enhancement?