Математикалық және логикалық операцияларды орындайтын негізгі микросхема:

1  Сыртқы жады.
2  Чипсет.
3  Процессор.
4  Шиналар.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
5  Слоттар.