Unit I: Computer Basics
1.00 Digital LiteracyUnit Objective:1.01 Computer Basics
1What Is A Computer?An electronic device that:Receives dataProcesses dataStores data, and Produces a result (output).Uses hardware and softwareVariety of types and sizes
2Types of Personal ComputersDesktop Computer: designed to be used on a desktop.
Notebook Computer: designed to be used on a desktop but still small enough to be portable.
Laptop Computer: designed to be small enough and light enough to be used on your lap.
3Tablet computer: similar to a laptop, but equipped with a touch screen and/or handwriting recognition
Netbook: similar to a laptop, but smaller, lighter, and more battery life
Other Types of Personal Computers
HardwareThe tangible, physical equipment that can be seen and touched such as:Computer CaseMonitorKeyboard and MouseDisk DriveSpeakers
MonitorKeyboardMousePrinterSpeakerComputer Case (Processor inside)Floppy Disk DriveCD-ROM/DVD DrivePARTS OF A COMPUTER SYSTEM6What you dont seeCPU (Central Processing Unit)The brains of the computer housed on a tiny silicon chip inside the computer case.
How Stuff Works Video
7IPOS CYCLEThe Information Processing Cycle consists of:Input DevicesProcessing DevicesOutput DevicesStorage Devices8 Input Devices
JoystickMouse/TrackballLight PenPointing StickTouch Pad KeyboardTouch ScreenBar Code ReaderScannerMicrophoneGraphics TabletDigital Camera
9Processing DeviceCentral Processing Unit (CPU) known as the brain of the computer and is responsible for processing the information that has been entered into the computer
10Output DevicesMonitor: a screen that displays information such as text and numbers.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.
11Storage DevicesHard Disk Drive: used to store data inside of the computer.Magnetic platter that holds a large amount of informationAllows the fastest access
RAM (Random Access Memory)- temporary, short term ROM (Read Only Memory)- long-term12Storage DevicesFloppy Disk: flat circles of iron oxide-coated plastic enclosed in a hard plastic case.Most are 3 inches and have a capacity to hold 1.44 MB or more of data.
CD ROM : a compact disk that reads only memory.
CD-RW: a device that allows you to read and write to a compact disk
13Storage Devices (Con.)DVD Digital Video Disks: Used for Movies USB/Jump Drive/Flash Drive: A completely portable disk and disk drive.What is the only Internal Storage Device?
Zip Disks: A storage option with larger capacity than a Floppy or CD. 14Which Storage Device Holds The Most Information?FLOPPY DISKS1.44 MBCD-ROM DISC640 MBDVD DISC17 GBHARD DRIVES80 and above GB
USB/Flash Drive2, 4, 8, or 16 GB
ZIP DISKS750 MB15Which Storage Device Holds The Most Information?Name These Devices:
16JUST A FEW MORE THINGS ABOUT HARDWARE!!!!!!!PERIPHERAL DEVICEA device attached to your computer that ENHANCES its ability to do more TASKS.LETS NAME SOME.KeyboardAn Input PERIPHERAL DEVICEMost common input device
Function Keys: Execute a command Activate program commandsNumeric Keypad: Key math operations and numbersAlphabetic Keys:Key lettersNumeric/Symbol Keys:Key numbers and symbols onlyKeyboard: Numeric Keypad123456789,/*-+Enter0NumLock
Be sure NUM LOCK is activated!The home row keys are 4, 5, and 6.Mouse
An Input PERIPHERAL DEVICEUsed to control the CursorPoint, Click, and DragA tool used to OPERATE the computer.The Information Cycle
21WHAT DOES IPOSSTAND FOR?Input Enters data into the computer
Processing Changes data into usable form
Output Sends data out of the computer
Storage Saves for use later
22 What Happens During The IPOS Cycle?INPUT when information is entered into the computer; the computer receives information.PROCESSING when the computer processes/changes the data that has been entered.OUTPUT when information leaves the computer.STORAGE when information is stored/saved to be used later.
23How The IPOS Cycle Works INPUTPROCESSINGOUTPUTSTORAGESTORAGE24Directions:Choose an everyday activity and relate it to the IPOS cycle.Put your cycle on notebook paper or you could type it.Not a requirement, but graphics would spruce it up.
IPOS Cycle HomeworkINPUTGather all ingredients and place on the counter.BreadPeanut ButterKnifePlatePROCESSINGUse the knife to dip into the jar of peanut butter and then spread the peanut butter onto a slice of bread. Place another slice of bread on top of the first.OUTPUTYou now have the finished peanut butter sandwich on the plate.STORAGEPlace the sandwich in a baggy to take to school for lunch.