Input, Output,
and Processing
IC3 Chapter 2
Guided Reading
Question 1
• Input, which
____________________________, must
be entered into the computer and then
stored on a storage media device.
• Data or Instructions
Question 2
• To turn the data into information,
_______________ processes the data.
• Central Processing Unit
(CPU)
Question 3
• After data is processed, it is “presented” to
the user through an
____________________________
• Output Device
Standard Input Devices
Question 4
• Input devices allow you
to___________________________.
• Enter data and commands into the
computer
Question 5
• The most commonly used input device is
the ___________________.
• Keyboard
Types of Keyboards
•
•
•
•
•
Ergonomic
Cordless or Wireless
Specialized
Security
Foldable or Flexible
Question 6
• An input device that allows you to position
the pointer on the screen is a
____________________.
• Pointing Device
Question 7
• ________________ is the most commonly
used pointing device.
• The Mouse
Question 8 – Define and Provide
Examples of the Following:
• Trackball
• A Pointing Device that works like a mouse
turned upside down with the ball on top.
Question 8 – Define and Provide
Examples of the Following:
• Touchpad
• A pointing device with a specialized
surface that can convert the motion and
position of your fingers to a relative
position on the screen.
Question 8 – Define and Provide
Examples of the Following:
• Pointing Stick
• A pressure sensitive device that looks like
a pencil eraser. It is located on the
keyboard, generally between the G, H,
and B keys.
Question 8 – Define and Provide
Examples of the Following:
• Audio Input
• The process of inputting sound into the
computer. This could include speech,
sound effects, and music. Devices include
microphones, CD/DVD players, radios,
and other hardware such as electronic
keyboards.
Standard Output Devices
Question 9
• _________________is data that has been
processed into a useful format. Output
devices display information.
• Output
Question 10
• ____________________ is a Display
device for a desktop computer. Varieties
include CRT, LCD, and gas plasma.
• A Monitor
Types of Monitors
• Cathode Ray Tube (CRT)
• Similar to a standard television, it has a
one color display, which can be white,
green, or amber.
Types of Monitors
• Liquid Crystal Display
• Produces an image by manipulating light
within a layer or liquid crystal cells.
Types of Monitors
• Gas Plasma
• Consists of a tiny amount of gas that is
activated by an electrical charge, which
manipulates colored fluorescent lights
arranged in a panel-like
screen.
Question 11
• _________________are used to produce
a paper or hard copy of the processing
result. Consider speed, print quality, and
price when choosing.
• Printers
Question 12
• ___________________ produce highquality output using the same technology
as copier machines.
• Laser Printers
Question 13 – Define The
Following
• Inkjet Printer
• Provides good quality color printing for
less expense than a laser printer.
Question 13
• Speakers
• A type of output device, Speakers
generate sound that is output from the
computer and other devices. Portable
speakers are known as headsets.
Specialized Input Devices
Question 14 – Define the
Following
• Digital Camera
• Take and store pictures digitally and then
transferred to a computer’s memory.
Digital cameras use a variety of storage
media to store the images including flash
memory cards, memory
sticks, USB keys, minidiscs, and other solidstate storage devices.
Question 14
• Game Controller
• A type of pointing device, game controllers
include Joysticks and Wheels.
Question 14
• Scanners / Bar Code Readers
• Scanners are devices that can change
images into codes for input to the
computer. Types of scanners include
image scanners, bar code scanners,
magnetic scanners, wireless scanners,
optical character recognition and optical
mark recognition.
Image Scanners
• These devices convert images into an
electronic form that can be stored in a
computer’s memory where it can be
manipulated.
Bar Code Scanners
• Reads bar lines that are printed on
products. An example is a scanner at a
grocery store at the check-out lane.
Magnetic Scanners
• These devices read encoded information
on the back of credit cards. This
information is the owner’s account
number.
Wireless Scanners
• A Bluetooth barcode scanner uses
Bluetooth wireless technology to scan data
and transmit it to a computer. An example
includes a scanner at a hospital.
OCR and OMR
• These optical devices use a light source to
read characters, marks and codes. Banks
use OCR (optical character recognition) to
scan checks and OMR (optical mark
recognition) is used for Scantron tests.
Question 14
• Touch Display Screen
• A special screen with pictures or shapes
that you can use your finger to “point” to
the desired object to make a selection.
You can find these screens on ATM’s, in
hotels, airports, delivery
services, and in mobile
devices.
Question 14
• Stylus
• A stylus and digital pen are pen-like writing
instruments. These devices allow you to
input information by writing on a PDA or
other mobile device, using the pen as a
pointer.
Question 14
• Environmental Probes / Sensors
• Workers use environment probes and sensors
with a standard web browser to view elements
such as the temperature and humidity of a
remote environment, smoke detector readings,
pollution control readings, and so on. Industries
such as farming, tropical fish production,
moisture monitoring, and warehouse security
use environmental probes and sensors to help
stabilize work areas.
Question 14
• Remote Controls
• A specialized input device used for
numerous standard applications such as
television, lights, fans, and so on. Also
used for purposes such as operating
cranes on a construction site and
operating product carts in warehouses.
Question 14
• Security Devices
• In information technology, biometrics is an
authentication technique using automated methods of
recognizing a person based on physiological or
behavioral characteristics. Consists of a reader or
scanning device and software that converts the scanned
information into a digital format. The scanned
information then is compared to a database of stored
biometric data. The steps in this process are enrollment,
submission, and verification.
Question 14
• Virtual Devices
• Virtual devices use the synchronized
positioning of light-emitting and sensing
devices to detect user input. Examples
include a virtual keyboard or a virtual
piano keyboard.
Question 14
• Touch Sensitive Pads
• The touch sensitive pad on a portable
device, such as an iPod, enables you to
scroll through a list, adjust the volume,
play music, view videos or pictures, and
customize settings.
Question 14
• Input Devices for the Physically
Challenged
• Keyboards operated with one hand or with
the feet, Camera Mouse enables users to
use a webcam to control the mouse
pointer by moving their heads, a humancomputer interface that uses eye control to
move a pointer and make selections
Specialized Output Devices
Question 15 – Explain the
Following
• Projectors
• A data projector projects the computer
image onto a screen; this is most
commonly used for presentations.
Question 15
• Fax Machines
• A fax machine and fax modem transmit
and receive documents over a telephone
line or through a computer.
Question 15
• Multi-function printers
• A multifunction printer combines various
outputs options such as printing, scanning,
copying, and faxing.
Question 15
• Control Devices / Robots
• Robotics is defined as the study, design,
and use of robot systems for
manufacturing. Typical applications
include testing, product inspection,
painting, assembly, and packaging.
Question 15 – Specialized
Printers
• Dot Matrix Printer
• Transfer ink to the paper by striking a
ribbon with pins. The higher amount of
pins, the better the print quality (dpi).
Usually attached to large computers such
as mainframes or midrange
servers.
Question 15 – Specialized
Printers
• Thermal Printer
• Forms characters by heating paper. The
printer requires special heat-sensitive
paper.
Question 15 – Specialized
Printers
• Mobile
• Small, battery powered printer generally
used with notebook computers.
Question 15 – Specialized
Printers
• Label and Postage
• Prints various types of labels on adhesive
paper. Postage print stamps and contains
a built-in digital scale.
Question 15 – Specialized
Printers
• Plotters/Large Format
• Engineers, architects, and graphic artists
use these for drawings and drafting output.
Question 15
• Output Devices for the Physically
Challenged
• Screen Magnifiers – These devices contain a range
of magnifications and a variety of fonts and are used
to enlarge the information on the computer screen.
• Screen Readers – Assists people who are blind or
visually impaired by using a speech synthesizer to
read screen content.
Question 16
• ________________is an interface to
which a peripheral device
____________________________with
the system unit.
• Port
• Attaches
Question 17
• For most hardware devices to work, they
need a set of ________________that
communicates with the computer’s
operating system,
called___________________.
• Instructions
• Drivers
Question 18
• If the operating system already contains
the driver, it performs an
_______________installation for newly
connected devices.
• Automatic
Question 19 – How Do These
Effect Computer Performance?
• Microprocessor
• CPU’s are classified as generations, and
the higher the generation, the faster and
better the processing speed. In other
words, the faster the processor, the more
instructions per second it can process.
Question 19 – How Do These
Effect Computer Performance?
• RAM
• The amount of RAM also helps to increase
the processing cycle and to enhance the
computer’s performance. When the
memory capacity is reached, the CPU
stores data on the hard drive. This slows
down the processing cycle because it
takes longer for the CPU to read from a
hard drive than the RAM.
Question 19 – How Do These
Effect Computer Performance?
• Hard Drive
• The bigger and faster the hard drive, the
faster data can be processed.
Organization of the hard drive also effects
computer performance.
Question 19 – How Do These
Effect Computer Performance?
• Video Card
• Can slow down or speed up computer
performance. Having adequate video
memory for the video card allows the
processor to perform to its full potential.