well,for homework we been use these 4 vocabulary words i went to the dictionary about all the words. For motherboard i look it up and saw that motherboard is a very important part of the computer. CPU is also important part too. it is the like the "brain" of the computer. output devices are as like a copy or printing(printer) it get out. and last but certainly not least the input device, it is a device that feds.   

:)