2. Lesson Objectives
• All of you will able to define what a computer is
and give examples of both hardware and
software.
• Most of you will be able to explain an input and an
output and give examples.
• Some of you will begin to understand what a
Central Processing Unit (CPU) is.

3. Guide to presentation
10 mins
A rough guide to how long you spend on an activity
is given on specific slides.
This pencil means you are to complete an activity
available from Moodle on a different worksheet.
Collaberation with other members of the course will
occur when gold links are seen.

4. 10 mins
What is a computer?
On Moodle, post on the forum what you think a
computer is. You will be able to see what other
people on the course think at this time.

5. So what was actually happening in the
picture?
This was taken in the 1950s .
It is referred to as human “computers”
The women are using a special type of calculator and the man on the
left is looking up numbers on a slider.
How close were you to actually figuring out what was going on?

6. Dictionary Definition of a Computer:
An electronic device which is capable of receiving information (data)
in a particular form and of performing a sequence of operations in
accordance with a predetermined but variable set of procedural
instructions (program) to produce a result in the form of
information or signals.
(Oxford Dictionary)

7. 10 mins
Computer Systems: Hardware & Software
Computers are made up of 2 different things;
Hardware: physical components of a computer
Software : a collection of computer data and instructions
• Example of hardware:
• Example of software:
Now you can see the difference between hardware and software,
please complete Activity sheet one found on Moodle.

8. 10 mins
Computer Systems: Input & Output
Computers work via a procedure known as;
Input
Process
Each button
represents a symbol,
letter or number.
Keyboards: the
buttons act as input
Output
Buttons are pressed
and the outcome is
text on the screen.
Complete the worksheet on Moodle to show you can identify the
different outputs and inputs.

9. Extension task: Central Processing
Unit (CPU)
This is a Central Processing Unit.
The main purpose for this is to, as
the name suggests, processes
data into usable information for
the computer and for you.

10. Extension task: Central Processing
Unit (CPU)
Create a stormboard account at: http://stormboard.com/
Once you have created an account the details below will
allow you to access the board I would like you to
complete.
The ID is: 70908
The Key is: mark9667
Complete research into CPU and make on stormboard to
show what you have found out. This will be useful in the
next lesson.

11. Plenary
Complete the quiz on Moodle to show what you have
understood.
Well done that is lesson one
completed.