your personal computer[1]
TRANSCRIPT
What is a computer?What is a computer?A programmable machine that allows a A programmable machine that allows a
person to input information, so it can then person to input information, so it can then process, store, and output informationprocess, store, and output information
INPUT
PROCESS
STORE
OUTPUT
What happens to information What happens to information 11STST??
A person INPUTS information into the computer to tell it what
to do.
Input – is either a program or data
? Which is “input” into the computer first – programs or data?
Data – Specific information you put in the computer in some way – like the information in a letter.
Program – a list of instructions written in a language the computer understands – Example – Microsoft works, solitaire
How do you input information?How do you input information?
By using an INPUT DEVICEBy using an INPUT DEVICE
Input Device – something that puts
information into the computer
Input device definitionsInput device definitionsScanner – – used to turn pictures or documents into used to turn pictures or documents into
groups of dots and transfer them to the computer – groups of dots and transfer them to the computer – similar to a copy machinesimilar to a copy machine
Bar Code Reader – – a wand or screen that uses a light a wand or screen that uses a light source to read the bar code characters – like when they source to read the bar code characters – like when they scan your groceries.scan your groceries.
Keyboard – a device resembling a typewriter – a device resembling a typewriter
Modem – an input and output device that lets two computers communicate with each other.
INFORMATIONS’ INFORMATIONS’ SECONDSECOND STOP STOPThe computer PROCESSES the information using the
CPU.
Sorts InformationAlphabetically
By Specific Directions
Compares InformationIs this number or phrase <, =, > ?
Arranges Information
Calculates InformationAdds,
Subtracts, Divides,
Multiplies, Etc
Informations’ next stop (3)Informations’ next stop (3) YOU tell the computer to YOU tell the computer to STORESTORE
the information in the the information in the correctcorrect place. place.
Where?
Network Server –
Your Personal Folder?
Diskette?Your
Computers’
Hard Drive?
Informations’ Informations’ FinalFinal Stop Stop The computerThe computer OUTPUTSOUTPUTS information by giving us the information by giving us the
results of the data processing so that we can see it.results of the data processing so that we can see it.
How does the computer output the information?
Screen or Monitor
Through OUTPUT DEVICES
Printer Modem
What is Hardware?Anything connected Anything connected
to the computer that to the computer that you can physically you can physically touch.touch.
Mouse
Keyboard
Printer
Monitor
Scanner
Disk Drive
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
Application Software we will use Application Software we will use and learnand 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
What is Storage?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
What are the two types of Computer Memory?
RAM – A kind of memory that is lost when – A kind of memory that is lost when the power is cut off. You CAN change the power is cut off. You CAN change RAM.RAM.
ROM – Memory that is not lost when the – Memory that is not lost when the power goes off. You can read ROM, but power goes off. You can read ROM, but you cannot change it. ROM holds you cannot change it. ROM holds instructions for the computer that are instructions for the computer that are necessary for it to work.necessary for it to work.
What is a Network?A Network is a system of computer linked together to
share information and hardware.
There are 2 different kinds of Networks.There are 2 different kinds of Networks.LAN and and WAN
LAN – Local Area Network
Used to connect devices within a building or on a
campus
LAN Example
Server