2.00 Understand Computer Fundamentals Unit Objective: 2.01.

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2.00 Understand Computer Fundamentals Unit Objective: 2.01

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

Types of Personal Computers Desktop computer: designed to be used on a desktop. Notebook/Tablet 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.

Hardware The tangible, physical equipment that can be seen and touched such as: Computer Case Monitor Keyboard and Mouse Disk Drive Speakers

Monitor Keyboard Mouse Printer Speaker Computer Case (Processor inside) Floppy Disk Drive CD-ROM/DVD Drive PARTS OF A COMPUTER SYSTEM

The Information Cycle The information processing cycle is the way users and computers interact.

WHAT DOES IPOS STAND FOR? I nput Enters data into the computer P rocessing Changes data into usable form O utput Sends data out of the computer S torage Saves for use later

Input Devices Keyboard Mouse/Trackball Joystick Light Pen Pointing Stick Touchpad Touch Screen Bar Code Reader Scanner Microphone Graphics Tablet Digital Cameras

Output Devices Monitor: screen that displays information such as text, numbers, and graphics Softcopy Most used output device Printer: gives you information & pictures. from the computer in printed form. Hardcopy Speakers: allow you to hear voice, music, and other sounds from your computer.

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

Storage Devices Hard Disk Drive: used to store data inside of the computer. Magnetic platter that holds a large amount of information in a form the computer can understand. Zip Disk: a device that is small and compact. It holds the most information Floppy Disk: flat circles of iron oxide-coated plastic enclosed in a hard plastic case. Most are 3 ½ inches and have a capacity to hold 1.44 MB or more of data. CD ROM Drive: a compact disk that reads only memory. CD-RW: a device that allows you to read and write to a compact disk

Storage Devices (Con.) Internal Storage: Allows you to store information inside of the computer Hard Drive: Allows the fastest access to information RAM (Random Access Memory) – temporary ROM (Read Only Memory) - long-term memory External Storage: Allows you to use devices to store information outside of the computer Floppy Disks CD-ROMs (Compact Disc Read Only Memory) CD-RW (Compact Disc (Read and Write) DVDs (Digital Video Disc) USB/Jump Drives Zip Disks

Which Storage Device Holds The Most Information? FLOPPY DISKS 1.44 MB CD-ROM DISC 640 MB DVD DISC 17 GB HARD DRIVES 80 and above GB

Software The intangible set of instructions that tells the computer what to do; known as programs or software programs.

Types of Software Operating System Software Sets the rules for how computer hardware and application software work together, controls the operation of the computer. Example: Windows Application Software Lets you accomplish specific tasks based on your needs. Examples: MS Word, Excel, Access, MS Works

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!

Application Software Software that works with the operating system to meet a specific need or perform a specific task Examples: MS Word MS Excel MS PowerPoint MicroType Pro Internet Explorer

Types of Application Software Word Processing Program that allows you to create, edit, and print text documents Report, flyer, memo Spreadsheet Numbered Rows and Lettered Columns Intersection of a row and column is a cell Grade book, financial info Database Lets you set up an electronic filing system Enter text and numbers Find, search, and print info in different ways Address book, Card Catalog