Transcript General Computer Knowledge Questions and Answers

What are the two main parts of a
computer?
► Software
& Hardware
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What is hardware?
► The
part of the Computer that you can see
and touch such as the system unit,
keyboard, monitor and mouse. There are
other hardware parts inside the system unit
which can only be seen when the Computer
case is opened. The motherboard, CPU and
adapter cards are inside the System Unit.
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What is Software?
► Computer
software is any series of instructions in
a language that the Computer understands and is
able to execute to accomplish the tasks required
by the software.
► Software is sometimes called a program or an
application.
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Give examples of Computer
Software?
► Microsoft
Word
► Excel
► Gaming
programs
► Computer gaming software
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Give four examples of Computer
hardware ?
► keyboard
► mouse
► monitor
► system
unit
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What is an input device?
► This
is what we use to tell the Computer
what to do. For example if you type on the
keyboard the Computer will receive the
text or your keyboard commands .
► The
keyboard is therefore an input device.
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What is an output device?
► An
output device makes you see or hear
what the Computer is doing. When you type
on the keyboard or move the mouse the
monitor makes you see what the Computer
is doing.
► In this case the monitor is the output device
giving you visual information on what the
Computer is doing.
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How does the Computer get input?
► We
can tell the computer what to do by typing on
the keyboard, by pointing and clicking the mouse
on an icon or a program.
► You
can scan documents and pictures into the
computer using a scanner.
► With
the help of a webcam pictures and videos
can be sent into the computer and transferred to
other computers on the Internet.
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Where does a Computer send its
output?
► Monitor
► Printer
► Speakers
The above are all output devices.
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YES or NO. The computer will work
without software.
► The
answer is NO because a computer
needs both hardware and software to
function and perform any meaningful
tasks.
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What is the difference between an
INPUT and OUTPUT device?
use an input device such as the MOUSE or
KEYBOARD to tell your computer to do something.
For example run a program.
► You
► An
output device such as the monitor allows you
to see what the Computer is doing. If you move
the mouse or type on the keyboard while in a
word processor, the monitor enables you to see
the text you are typing.
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The VGA port on the computer is
used for what?
► It
is used to connect a monitor to the
computer.
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How does a Computer store
information or data?
► The
Computer stores data and information
permanently either on a permanent storage
media such as the hard disk or on a
temporary media such as its main memory.
► The Computers main memory (RAM) is used
for temporary storage only. All information
inside the memory is lost when you turn off
or restart the Computer.
► RAM is short for Random Access Memory
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How does the Computer process
information?
► The
CPU works together with other
integrated circuits on the motherboard to
carry out the instructions contained in a
program.
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What is another name for software?
► PROGRAM
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or APPLICATION
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True or False:
A printer is an input device.
► FALSE
printer is an example of an output device.
► When you want to see a hard copy of a document
or text, you signal the application that you would
like to print. The application will then send the text
as output to the printer which then creates the
printout for you on paper.
► The
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True or False. A monitor is an output
device
► TRUE
► The
Monitor helps you see what the
Computer is doing.
► For example when you type on the
keyboard the text appear on the monitor for
you to see.
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True or False. A keyboard is and
output device.
► FALSE.
The keyboard is an input device.
► When you type on the keyboard you are
telling the Computer what to do.
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True or False. A mouse is an input
device
► TRUE
Mouse is one of the standard input
devices.
► You use the mouse to signal or tell the
Computer what programs to run or what
tasks to perform.
► The
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Is a speaker an input or output
device?
Speaker is our output device
► When you play a sound or music on the
Computer you hear the sound in the
speaker.
► The Computer outputs or sends the sound
to the speaker for you to hear.
►A
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What are the basic input and output
components of the computer?
► KEYBOARD
► MOUSE
► MONITOR
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What is the Central Processor Unit
► This
is the brain of the computer. It carries
out all the instructions that you send to the
computer through a program or from an
input devices.
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What is another name for the CPU
►
The Microprocessor or Central Processor
Unit
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CPU is short for what?
► CPU
is short of Central Processor Unit.
► The CPU is the brain of the Computer. It
performs functions that makes the
Computer accomplish useful tasks.
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What does the CPU do for the
computer?
► The
CPU executes all the instructions given
to the computer either through a program
or by the user to complete the intended
task.
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Why have Computers become so
popular?
► Computers
allow individuals and companies
accomplish various tasks much faster and
more efficiently. Information can be created,
stored, shared and retrieved much faster.
This has made the computer the device of
choice for conducting business.
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What is an electronic mail?
► This
is a program or application that allows
you to create and send text messages to
other people. You can also attach files and
pictures to the text message and send.
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What is the internet?
► The
internet is a worldwide network of
computers that share a wide range of
resources.
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What can you do on the internet?
► Search
for information
► Download files
► Play Games
► Send and retrieve emails
► Learn
► Shop
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Why is the internet so popular?
The Internet has numerous benefits. It has enabled
resources to be shared worldwide. You can reach millions of
people with the help of the internet.
Amongst the things one can use the internet for are:
►
►
►
►
►
►
Search for information
Download files
Play Games
Send and retrieve emails
Learn
Shop
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What is an Internet Browser?
► This
is the program or application that you
launch to connect to the internet. It
provides an interface to the World Wide
Web.
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What is a Search Engine?
► This
is the program that allows you to search for
all kinds of information on the internet. Examples
of Search Engines are Google and Yahoo.
► To
use the Google search engine the
www.google.com in your web browser.
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What will you need to connect your
Computer to the Internet?
►a
communications device such as a modem
or router
► a communications infrastructure such a
telephone line or satellite link
► an Internet Service Provide (ISP) so
subscribe internet service from
► an Internet Browser ( e.g. Internet Explorer,
FireFox, Netscape)
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What does an ISP do?
► To
get access to the Internet from a home
Computer you need to buy or subscribe to
Internet service from an ISP. The ISP
already has high speed link to the internet
and is in the business of selling internet
access services to subscribers.
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What is the recommended way to
turn on or power on you
Computer and its peripherals?
► First
power on all external devices attached
to the Computer including peripherals such
as modems, printers, scanners, monitors.
Then turn on the system unit.
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The speed at which your CPU processes instructions
is measured in Mega Hertz (MHz) or Giga
Hertz (GHz)
► 1000MHz
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= 1GHz
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True or False. The MEMORY or RAM inside the Computer is
used by the CPU as temporary storage while the CPU
executes its instructions
► This
is TRUE
► The Computer’s CPU (a.k.a Central
Processor Unit) uses the RAM or memory
inside the Computer to store programs
instructions and data while it executes those
instructions.
► When you turn off the Computer all the
information in memory will be erased and
lost.
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What happens to the information stored inside
RAM when you shutdown the Computer
►
Information in RAM (that is the Computer’s main
memory) is only temporary. This information is lost
when the Computer is powered off or shutdown.
►
While you are typing a text or creating a document
your work is kept temporarily in the Computer’s main
memory. If you need to store this information
permanently you need to save your work to the hard
disk or a pen drive.
►
It is advisable to save your work often.
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What is a Computer Network?
►A
Computer network consists of two or
more computers connected together with
the purpose of sharing resources such as
printers and files servers.
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What are the benefits of a Computer
Network?
►
A Computer network allows resources to be shared among
computers on the Network. If you have a printer connected
to the network or to one of the Computers on the network,
other computers can print to this printer.
►
A Computer network also allows the transfer of information
such as electronic mails and data from one Computer to
the other .The Internet is a special type of Computer
Network
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Name a few resources that can be
shared on a Network.
► Printers
► Databases
► File
servers
► Internet Connection
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Name some of the communication devices
that will be needed on a Network
► HUBS,
► SWITCHES
► ROUTERS
► ETHERNET
ADAPTER CARDS
► WIRELESS ADAPTER CARDS
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What is the motherboard?
► The
motherboard is located inside the
Computer case (system unit) and it houses
all the critical components inside the
computer including the CPU, various
integrated circuits, RAM, adapter cards.
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What is an Adapter Card?
►
►
►
►
►
Adapter cards allow external and peripheral devices to be
connected to the computer.
Adapter cards are normally installed on the motherboard.
A Network Adapter card allows you to connect a Computer
to a network.
A video adapter card allows a monitor to be connected to
the Computer.
A sound card allows speakers and microphones to be
connected to the Computer
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On the Computer where will you normally find PORTS for mouse,
keyboard, monitor and, printers?
► The
ports for these devices are normally
located at the back of the Computer. Newer
Computers with USB ports allow you
connect USB Keyboards and Monitors to the
front or side of the of the System Unit.
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What kinds of mouse and keyboard
connectors and ports exist?
►
PS/2 => Used to connect a PS/2 style mouse or keyboard to the
computer.
►
The PS/2 mouse connector is usually GREEN in color.
►
The PS/2 keyboard connector is usually PURPLE in color.
►
USB => Used to connect USB style mouse and keyboard to the
computer. USB is acronym for Universal Serial Bus. It can be used to
connect a wide range of devices to the Computer
►
SERIAL => Also known as COM port. Some old mice use to
have serial connectors and could be connected to the computer this
way. Serial ports are also used to connect peripherals like external
modems and digital cameras to the computer
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What is ROM (Read Only Memory)
► This
is memory that is pre-programmed with
instructions that the CPU reads and
processes when the computer is powered
up or turned on.
► ROM is non-volatile memory. Information in
ROM stays permanently and is not lost
when you shutdown or reboot the computer.
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What is the difference between RAM
and ROM?
► RAM
is volatile memory and ROM is non-volatile
memory.
► RAM stores information temporarily whiles the
computer is still running.
► Information inside the ROM is electronically preprogrammed and permanent.
► RAM loses all its content when the computer is
powered off or restarted.
► ROM maintains its information even when the
computer is powered off.
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How do you copy files from one
location to the other?
► Look
for the file in the location where it is
stored
► Right Click on the file with the mouse. From
the pop-up menu choose copy.
► Go to the drive and folder where you would
like to copy the file to.
► Right-Click and open space and select paste
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