1. Computer Fundamentals
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2. What Is A Computer?
An electronic device that receives data, processes data, stores data, and produces a result (output)
Classified by size, speed and application
Uses hardware and software
Comes in different types
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3. Hardware
The tangible, physical equipment of the computer that can be seen and touched such as:
Computer Case-houses inside components
Monitor-CRT or LCD
Keyboard-contains numbers and letters like a typewriter
Mouse-right click for special functions
Disk Drives-floppy, hard, CD, DVD, Flash
Speakers
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4. PARTS OF A COMPUTER SYSTEM Computer Case (Processor inside)
Monitor
Speaker
Keyboard
Computer Case (Processor inside)
Mouse
CD-ROM/DVD Drive
Printer
Floppy Disk Drive
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5. Input Devices Keyboard Mouse Joystick Touchpad Touch Screen
Bar Code Reader
Scanner
Microphone
Digital Cameras
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6. Output Devices
Monitor: screen that displays information such as text, numbers, and pictures.
Softcopy
Printer: gives you information from the computer in printed form.
Hardcopy
Speakers: allow you to hear voice, music, and other sounds from your computer.
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7. Processing Device
Central Processing Unit (CPU)--known as the heart or “brain” of the computer and is responsible for processing the information that has been entered into the computer
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8. Which Storage Device Holds The Most Information?
Flash, Jump, Thumb Drive
1 GB and up
CD-ROM DISC
640 MB
HARD DRIVES
80 GB and above Terabyte = 1000 GB
DVD DISC
17 GB
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9. What Are Peripherals?
A peripheral device is one that is attached to a computer in order to expand its ability to perform more tasks
Are generally external
Some of the more common devices are printers, disk drives, scanners, microphones, speakers, and cameras
The devices can be input and output devices
Some input devices are: mouse, joystick, keyboard, scanner
Some output devices are: monitor, projector, speakers
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10. Software
The intangible set of instructions that tells the computer what to do; known as programs or software programs.
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11. Types of Software Operating System Software Application Software
Sets the rules for how computer hardware and application software work together, controls the operation of the computer.
Example: Windows XP, VISTA, Windows 7
Application Software
Lets you accomplish specific tasks based on your needs.
Examples: MS Word, Excel, PowerPoint, MS Works
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12. Operating System Software Tasks
Boots (starts up) the computer
Formats disks
Creates folders
Saves and retrieves files
Moves and copies files
Every Computer Has Operating System Software!
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13. Application Software
Software that works with the operating system to meet a specific need or perform a specific task
Examples:
MS Word—for word processing documents
MS Excel—for math calculation spreadsheets
MS PowerPoint—for slide presentations
MicroType—for learning to type correctly
Internet Explorer—for accessing the Internet
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14. Virus/Anti-Virus Software
Programs that are written to damage/destroy computers are called viruses.
Anti-Virus software has to then be written to prevent (kill) the damage that virus software can do.
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15. WHAT DOES IPOS STAND FOR?
Input
Enters data into the
computer-
Receives Data
Processing
Changes data into
usable form
Output
Sends data out of the
computer
Storage
Saves for use later
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16. How The IPOS Cycle Works
INPUT
PROCESSING
OUTPUT
STORAGE
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