Computer Basics What is a Computer A

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Computer Basics

What is a Computer? A machine that can: 1. 2. 3. 4. Receive an input Process the data Produce a result in a desired format Store information as needed

Types of Computers 1) 2) 3) 4) Super Computers Mainframes Personal Computers Laptops

Parts of a Computer Hardware Software

Hardware The Physical portion of the computer 1) Input- keyboard, mouse 2) Output- monitor 3) Storage- hard drive (internal), thumb drive 4) Memory- RAM (random access memory) 5) Central Processing Unit (Microprocessor)

The Computer System Unit • The “computer tower” a. Power Supply b. Mother Board 1. CPU 2. RAM (memory) c. Expansion slots d. Drive Bays - Hard Drive – Universal Serial Bus .

Peripherals Your Input and Output Devices Output: Monitor, Printer Input: Mouse, Keyboard, CD ROM Input/Output: Hard Drive, CD R/CD RW, Modem

Bits and Bytes Computers use a binary code to represent data Bit= a 0 or a 1 Byte= 8 Bits (for example a letter or a space) – Kilobyte=1, 024 bytes – Megabyte=1, 024, 000 bytes – Gigabyte=1, 024, 000 bytes – Terabyte=1, 024, 000, 000 bytes

Discuss Computer Speed (Htz)

Software The Program portion of the computer 1) Operating System Software- tells hardware how to run properly 2) Application Software- programs users can run to accomplish a task ex: Microsoft Word©

Operating System (OS) Operating Systemallows hardware to communicate with application software

Windows XP Top Features include: • • • Fast User Switching Windows Media Player Windows Movie Maker Automatic Updates Remote Assistance • • • Network Setup Wizard Simplified Visual Design My Pictures Internet Explorer 6 System Restore

Types of OS 1) Graphical User Interface (GUI)- ex Windows 98 - contains graphics and icons, navigated by mouse 2) Multi-User- ex Windows XP - more then one user can access the computer at the same time 3) Multiprocessing- ex Windows XP - capable of utilizing more then one processor at the same time 4) Multitasking- ex Windows XP - allows multiple software programs to run at the same time

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