Chapter 4: Hardware

Chapter 4: Hardware

The CPU: The Brains of the Operation
1. 1. The CPU consists of the arithmetic logic unit (ALU) and the control unit
2. 2. The Information Cycle
  1. 1. Fetch
    1. 2. Decode
      1. 3. Execute
        4. Store
3. 3. Modern processors use pipelining and parallel processing to improve performance
4. 4. A multi-core processor consists of more than one processor on a single chip
Getting to know your System Unit and Motherboard
1. 1. The motherboard is the main circuit board in a computer; it provides a way for devices to attach to the computer
2. 2. Ports and connectors attach peripheral devices to a motherboard
3. 3. Information flows between the components of a computer over data buses
4. 4. The BIOS is a program stored on a chip on the motherboard that's used to start up a computer
5. 5. RAM is volatile memory that holds the operating systems, programs, and data the computer is currently using
A Place for Everything
1. 1. Lasers read the data on optical discs
  1. CDs
  2. DVDs
  3. Blu-ray discs
2. 2. Hard drives store data magnetically on metal platters
3. 3. Flash memory stores data on a chip
What Goes In . . .
1. 1. The mouse and keyboard are the most common input devices
2. 2. Digital cameras and webcams input images and video
3. 3. Scanners convert information into a digital format
4. 4. Microphones are audio input devices
. . . Must Come Out
1. 1, Most personal and notebook computers have LCD monitors
2. 2. Large plasma monitors are commonly found in media centers and conference rooms
3. 3. Resolution is the number of horizontal pixels X the number of vertical pixels on a screen
4. 4. Types of video projectors
  1. DLP
  2. LCD
5. 5. Video cards connect monitors and projectors to a computer
6. 6. Speakers and headphones are audio output devices that connect to a sound card
Pick a Printer
1. 1. The most common personal printer is an inkjet printer
2. 2. The most common office printer is a laser printer
3. 3. Specialized printers
  1. Dye-sub
  2. Thermal printers
  3. Plotters
4. 4. PictBridge is a standard that lets you connect a digital camera directly to a printer
5. 5. Three-dimensional (3D) printers can create objects such as prototypes and models
Adaptation: Making Technology Work for You
1. 1. Adaptive technology helps individuals with disabilities interact with technology
2. 2. The Americans with Disabilities Act (ADA) requires employers to make reasonable accommodations for disabled employees
3. 3. Adaptive technology includes both hardware and software
Communicate, Communicate, COmmunicate
1. 1. A network adapter connects a computer to a network
2. 2. A modem is used for dial-up Internet access
3. 3. Digital signals carry more data and are less prone to interference than analog signals

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