Types and
Components of
computer system
By the end of the lesson, students should be
able to:
► Define
hardware, giving examples
► Define
software, giving examples
► State
the four main components of computer
system.
►
Explain about the function of CPU.
►
Describe the function of ROM
What is hardware??
Hardware is the physical parts of the computer system – the parts that
you can touch and see.
A motherboard, a CPU, a keyboard and a monitor are all items of
hardware(all of the parts that make up your body: bones, muscles,
skin, blood, etc)
What is software??
Software is a collection of instructions that can be ‘run’ on a computer. These
instructions tell the computer what to do.
Software is not a physical thing (but it can of course be stored on a physical
medium such as a CD-ROM), it is just a bunch of codes(all of your thoughts
and mental processes: these are the instructions that tell your physical body
what to do)
Main components of computer system
1.Motherboard
The motherboard is the backbone that ties the computer's
components together at one spot and allows them to talk to each
other. Without it, none of the computer pieces, such as the CPU, GPU,
or hard drive, could interact.
2.CPU
►
A central processing unit (CPU), also called a central processor,
main processor or just processor, is the electronic circuitry that
executes instructions comprising a computer program.
3.Random Access Memory
►
-Random access memory (RAM) is an internal chip where data is
stored temporarily
►
-Memory can be written to and read from
►
-RAM > ROM (usually; except washing machines)
4.Read Only Memory
►
Read only memory (ROM) is memory used to store
►
permanent information
►
Used to contain configuration data for a computer etc.
►
Chips cannot be altered, only read from
►
Data not lost when computer is turned off
►
Referred to as non-volatile memory
Function of CPU
Functions of ROM