Computer system-a serious of input that is processed by a
computer
Hardware-the computer itself
Software-operating information used by a computer
Input- things put into the computer (keyboard, mouse, memory
stick, sensors and bar code readers.
Output-things that come out of the computer (monitors,
headphones, speakers and printer projectors.
Process- processing
is the stage where the input data is manipulated in order to produce meaningful
information.
Storage- storage for work to be saved into the computer
(hard disks)
Elements of the CPU
-the CPU consists of 3 major components
-the Arithmetic and logic unit (ALU)
-The memory unit
-The control unit (CU)
The ALU- does mathematical tasks rapidly performs
calculations and logic operations from 1/10
(ON/OFF) data from the memory unit. The ALU transforms the digital
data and outputs the resulting value
The memory unit
Consists of a small
number of memory registers which will store items of data and send them to the
ALU for processing. The results of the processing will be copied back to the
memory unit for storage.
The CU is in charge of processing it interprets the software
instruction and sends the right data and operation to the ALU. It accepts the
results of the processing from the ALU.
