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1.1
Computer Basics
COMPUTER
HARDWARE
COMPUTING DEVICES AND PERIPHERALS
• Desktop computer
Microphone
• Notebook computer
Digital camera
• Smartphone
Printer
• Tablet
Scanner
• ATM machine
Wireless router
Section Skill Overview
• Identify common peripheral devices by sight
• Identify common ports and connectors by sight
• Connect cables and peripherals to a computer system
• Select appropriate hardware devices for particular
scenarios
KEY Terms
Hardware
Software
Peripheral
Device
Mobile
Device
DVI
HDMI
RJ45
USB
Surge
Protector
Inkjet
Printer
Laser
Printer
RAM
KEY DEFINITIONS
• Hardware: The physical components of a computer
system. Common hardware components include the
CPU, motherboard, hard drive, and RAM.
• Software: Computer programs, procedures, instruction,
and data that control how the computer operates.
• Peripheral Device: An external device that connects to
a computer in order to provide additional functions and
capabilities. Examples of peripheral devices include
mice, keyboards, graphics cards, and speakers.
• Mobile Device: A portable handheld computing device,
such as a smart phone or tablet computer.
KEY DEFINITIONS (continued)
• DVI (Digital Visual Interface): A video display interface that
connects digital video data to a display device such as a monitor.
• HDMI (High-Definition Multimedia Interface): A video display
interface that uses a 19-pin connector to transfer audio and visual
data between devices at extremely high bitrates.
• RJ45 (Registered Jack 45): A cable connector specification
commonly used in Ethernet networks. An RJ45 has an 8-pin
connector that can be attached to a twisted pair cable.
• USB (Universal Serial Bus): A standard that specifies cables,
connectors, communication protocols, and power supply
requirements for the connections between computers and
computing devices.
KEY DEFINITIONS (continued)
• Surge Protector: A device with electrical outlets that protects
electronic devices from voltage spikes.
• Inkjet Printer: A type of printer that uses inkjets and magnetized
plates to spray ink directly onto paper to create printed text and
images.
• Laser Printer: A type of printer that uses toner and a laser to print
images and text. The laser electrostatically charges a drum which
then attracts toner in the shape of the text and images. The toner
is then transferred to the paper using heat.
• RAM (Random Access Memory): High-speed integrated circuits
used to store computer, user, and program data during computer
processing. RAM is volatile memory, which means that when the
computer is powered off all information stored in RAM is lost.
COMPARING COMPUTER TYPES
Desktops
Notebooks
Mobile Devices
Modular design
Integrated input/output
devices
Integrated devices
Easier to repair/upgrade
More difficult to
repair/upgrade
Very difficult to
repair/upgrade
More powerful
Less computing power
Much less computing
power
Require continuous
power
Battery powered
Batteries difficult to replace
Not mobile
Smaller and lighter for mobility
Most mobile
Relatively inexpensive
More expensive for
comparable power/features
Least expensive
IN-CLASS PRACTICE
• As a class, watch Video 1.1.11 – Using the
Hardware Simulator.
• Verify that you understand how to use the
simulator by doing Applied Lab 1.1.12 – Explore
the Lab Interface.
• Let me know if you need help on a task.
Class Discussion
• Which types of computer devices are most
appropriate for different types of users?
• What hardware components are generally required
for a desktop computing system?
• What are the advantages and disadvantages of
different types of printers?
Class Activities
• Examine a mobile computing device you have with you,
such as a notebook computer or a smartphone:
• Identify all ports on the device, including the interface used.
• Make a list of all known hardware components within the
device.
• Make a list of all integrated devices.
• Work in small groups to compare the features included
in two or more smartphones (examine both hardware
and software).
Summary
• Computer Hardware
• Computer Software
• Peripherals, Connectors, and Ports
• Printer Types
• USB Interface
HOMEWORK ASSIGNMENTS
Complete the labs in this
section:
• Applied Lab 1.1.13 – Set
Up a Computer
• Applied Lab 1.1.14 – Install
USB Devices
• Applied Lab 1.1.15 –
Connect a Printer
Prepare for the next class:
• Video 1.2.1 – Operating
System Functions
• Video 1.2.3 – The Windows
7 Operating System
• Video 1.2.5 – Desktop
Applications
• Video 1.2.7 – The Windows
Control Panel