How do we give a computer instructions We give a computer instructions by putting different programs into it."Computer programs"write computer programs .It is essential for these people not to make mistakes.Otherwise,the computer will not work well.A computer needs different programs to do different jobs.For example,playing games,writing letters and drawing pictures all need different programs. There are also different language for different programs .To write a programs ,people needs to know this language.Sometimes a computer programmer may know many different language.However,computer language are not spoken language like Chinese or English but written language .Also,only the computer and the programmer can understand them! CD-ROMs and DVD-ROMsMany computer have CD-ROM or DVD-ROM drives .A CD-ROMcan hold over300,000 pages ofwriting ,and may also contain pictures and sounds.A DVD-ROM can hold even ,more information. So,you can use them on your computer to read about the most famous people in the world today. You can also see photographs or videos of people,and even listen to them speaking .According to some people,CD-ROMs and DVD-ROMs will became even more popular than books.