Computer Hardware Objective 2 01 A Classify Computer

Computer Hardware Objective 2. 01 A: Classify Computer Components 1

Essential Question: What are the parts and features of a computer? 2

What is a computer? An electronic device that receives data, processes data, stores data, and produces a result (output) Classified by Size l Speed l Applications l 3

Types of Personal Computers Desktop computer: designed to be used on a desktop Laptop computer: portable computer designed to be small enough and light enough to be used on your lap Tablet computer: portable computer primarily operated by touching the screen rather than using a physical keyboard 4

Computer Components: Hardware – the physical equipment of the computer system that you can see and touch l Hardware devices are also known as peripheral devices. 5

Monitor CD ROM Drive Speakers Keyboard Computer Case (Processor inside) Floppy Disk Drive USB Drive Mouse 6

Input Devices Used to put information into the computer Allow you to communicate with your computer Mouse Webcam Most Common and used to control the cursor Keyboard Most Common Joystick Used for Games Microphone Scanner Converts images into a readable form for the computer 7

Output Devices Send information out of the computer Allow the computer to communicate with the user Speakers Monitor – Video display screen and produces soft copy Projector Headphones Printer – produces hard copy 8

Types of Printers • Inkjet (non-impact) • • • Better quality of printed document Uses ink cartridge Less expensive than laser • Laser (non-impact) • Best quality of printed document • Uses laser beam and toner • Most expensive • Quickest 9

Processing Device Central Processing Unit (CPU) • known as the heart or “brain” of the computer • responsible for processing the information that has been entered into the computer 10

Storage Devices Internal Storage- External Storage- Allows you to store information inside of the computer Hard drive: Allows the fastest access to information RAM (Random Access Memory) – temporary storage ROM (Read Only Memory) – long-term storage Allows you to use devices to store information outside of the computer Floppy disks (Diskette) Zip disks (Largest File Capacity) CD-ROMs (Compact Disc Read Only Memory) CD-RW (Compact Disc Read and Write) DVDs (Digital Video Disc) USB/Flash drives 11

Input, Output, and Storage Devices Input device: hardware that allows the user to communicate with the computer. Output device: hardware that allows the computer to communicate with the user Storage device: allows you to store or retrieve information 12