Going with the Data Flow

Mrs. Staniec

Objectives:

1. Identify the role of the central processing unit. 2. Identify concepts related to computer memory.3. Identify the features and benefits of different

storage media. 4. Identify the types and purposes of standard

input and output devices on desktop and laptop computers.

5. Identify the types and purposes of specialized input and output devices.

6. Identify how hardware devices are connected to and installed on a computer system.

7. Identify how hardware and software interact.

Phase One: Start Me Up!

Power-on CPU ROM-BIOS (read-only memory – basic input/output

system)

Hardware Test

Load OS

Data Flow

Interplay among CPU, RAM, Storage

Load from storage

RAM as CPU’s short-term memory

Operating System Load

CPU loads OS files from hard drive to RAM

Creates a user interface

Phase Two: The Process

Input Process

Output

Input Devices

KeyboardMouse

TrackballTouchpad

MicrophoneGame

Devices

Installing Input Devices

Physical connections DIN ports (keyboard and mouse) USB FireWire

Software support Plug and play Drivers

Output Devices

Feedback devices Monitor Projectors Speakers Voice synthesizers

Hardcopy Printer

Output Devices

Storage Devices RAM is temporary storage

Need some other device for long-term storage

Magnetic Storage Devices

Magnetic Hard drive Floppy disk

Optical Storage Devices

CD-media CD-ROM CD-R CD-RW

DVD-media DVD-ROM DVD-R DVD±RW

Blu-ray Discs BD-R BD-RE

Connecting Output Devices

Physical connections (color-coded)

Install support software (drivers)

Closing Programs and Shutting Down

Do it the right way:1. Save and close documents2. Close applications3. Log out4. Power down

Avoid corrupting files

Maintain security

In-class Activity

Complete Chapter 2 Review Questions