اذا ممكن اريد مساعده ف حل هذه الاسألة
-what happen if both CPU and I\O devices want to access the bus at same time??



-name some devices which are both input and output??


-by having many processor ,the excecution time of the task
can be made always faster.
if yes,then how?if not why not??


waht could is be the possible of the following types of memory
a)Rom"read only memory"
b)cache:avery high speed memory