The( )led to the invention of personal computers,or microcomputers.

单项选择题The fourth generation computers can be characterized by both the jump to monolithic integrated circuits and the invention of( ).

单项选择题Most electronic devices today use some form. of( )placed on printed circuit boards.circuits

单项选择题The common input devices are the ( ) and the ( ).

单项选择题A computer must include three of following.Which one is not necessary?

单项选择题RAM is a( )storage.

单项选择题A ( ) is a collection of relation fields.

单项选择题Which of the following is not a format for a graphical image file?

单项选择题They fell in love ( ) the first sight.

单项选择题Xiaoming ()notes at the meeting.

单项选择题Am I supposed ( ) all the rooms or just this one?