1. How does data flow around a
computer system
P3
By luke thurston

2. What is data flow
• A (DFD) or data flow diagram is a visual
representation of data flowing the around the
computer and also it collects data sends it and
tells the data where it needs to be stored.

3. What does it do?
• Data flow diagram reveal relationships that
are in a program DFD are important for
modelling a system’s in high detail DFD has
four major things that make it work
components , entities ,processes and data
stores. The reason we use DFD is because its
easier to explain to an non technical
audiences.

4. How does it work
• The data flows in or out of a computer for
example data may be given to the computer
by a printer or USB cables then once there
both connect the data will transfer and the
data flow will be complete.