2. What is a computer?
A programmable machine that allows a
person to input information, so it can then
process, store, and output information
INPUT
PROCESS
STORE
OUTPUT
3. What happens to information 1ST?
A person INPUTS information
into the computer to tell it what
to do.
Input – is either a program or data
4. Program – a list of instructions written
in a language the computer
understands – Example – Microsoft
works, solitaire
Data – Specific information you put in the
computer in some way – like the
information in a letter.
? Which is “input” into the computer
first – programs or data?
5. How do you input information?
By using an INPUT DEVICE
Input Device – something that puts
information into the computer
6. Examples of input devices
Keyboard
Modem
Mouse
Joystick
Bar Code
Reader
Light Pen Scanner
7. Input device definitions
Scanner – used to turn pictures or documents into
groups of dots and transfer them to the computer –
similar to a copy machine
Bar Code Reader – a wand or screen that uses a light
source to read the bar code characters – like when they
scan your groceries.
Keyboard – a device resembling a typewriter
Modem – an input and output device that lets two
computers communicate with each other.
8. INFORMATIONS’ SECOND STOP
The computer PROCESSES the information using the
CPU.
Sorts Information Arranges Information
Alphabetically
By Specific Directions
Calculates Information
Adds,
Compares Information Subtracts,
Divides,
Is this number or phrase <, =, > ? Multiplies,
Etc
9. Informations’ next stop (3)
YOU tell the computer to STORE
the information in the correct place.
Where?
Your Network Server –
Diskette? Computers’
Your Personal
Hard Drive? Folder?
10. Informations’ Final Stop
The computer OUTPUTS information by giving us the
results of the data processing so that we can see it.
How does the computer output the information?
Through OUTPUT DEVICES
Screen or Monitor Printer Modem
11. What makes up a Microcomputer
System?
Hardware
Software
Storage
12. What is Hardware?
Anythingconnected Mouse
to the computer that
you can physically Keyboard
touch. Printer
Monitor
Scanner
Disk Drive
13. What is Software?
Instructions that tell the computer what to do
There are two types of software.
Operating Software – directs all the activities & sets
the rules for how hardware and software work
together
Applications software – software pack gages you
by to perform certain tasks – Examples: Microsoft
works, Solitaire, Excel, Publisher
14. Application Software we will use
and learn
Microsoft Integrated Software Package
Word Processing – allows you to insert and delete text; helps
you write letters, memos, etc.
Spreadsheet – helps you process financial or mathematical
information
Database – helps you organize, find and display information
in different ways
Desktop Publishing – helps you enhance and create
newsletters, flyers, and brochures
Power Point – presentation software – allows you to combine
text, graphics, and sound to create a professional look in
an electronic slide show
15. What is Storage?
Devices that allow you to save your info
Types of Storage Devices
Diskette – floppy – stores 1.44 MB
CD – stores 650 MB or equivalent of 470 diskettes
Hard disk – permanently installed in the
computer; comes in different sizes
Laser Disc – holds major amounts of info; looks
like a large record – only silver
16. What are the two types of
Computer Memory?
RAM – A kind of memory that is lost when
the power is cut off. You CAN change
RAM.
ROM – Memory that is not lost when the
power goes off. You can read ROM, but
you cannot change it. ROM holds
instructions for the computer that are
necessary for it to work.
17. What is a Network?
A Network is a system of computer linked together to
share information and hardware.
18. There are 2 different kinds of Networks.
LAN and WAN
LAN Example
LAN – Local Area
Network
Used to connect
devices within a
building or on a
campus
Server
19. WAN Network Example
Wide Area Network
Used to connect computers
Over long distances
