Various components of Computer Hardware and Software.

Various components of Computer Hardware and Software.

1. Types and components
of computer systems

2. The two parts to
a computer system
•Hardware – the parts of the computer system
you can touch
•Software – supplies the instructions that tell
the hardware what to do

3. Main components
•Processor and internal memory devices
•Input devices
•Output devices
•Secondary/backing storage devices

4. The processor and internal
memory devices
Processor or CPU:
•The brain of the computer
•Stored on a chip
•Responsible for the step-by-step
running of the computer
•Does the calculations
•Performs logic operations

5. The processor and internal
memory devices
Internal memory includes:
•ROM (read only memory)
•RAM (random access memory)
•Hard disk

6. Input devices
Input devices include:
•Keyboard
•Mouse
•Scanner
•Microphone
•Touchpad
•Touch screen

7. Output devices
Output devices include:
Monitors/screens
Printers
Speakers
Plotters

8. Examples of hardware
There are many examples of
hardware here. How many of
them can you name?

9. Software
•The programs that tell
the hardware what to do
•Two types: operating
systems software and
applications software
•Can come on CDs or as
downloads

10. Types of computer systems
•Mainframe computers
•Desktop computers
•Laptop computers
•Netbook computers
•Palmtop/PDA
computers