Chapter 1

Question 1

What does Computer mean?

Answer 1

A computer is a machine or device that performs
processes, calculations and operations based on
instructions provided by a software or hardware
program. It is designed to execute applications and
provides a variety of solutions by combining
integrated hardware and software components.

Question 2

made up of multiple parts and components that
facilitate user functionality.

Answer 2

computer

Question 3

two primary categories of a computer

Answer 3

hardware and software

Question 4

Physical structure that houses a
computer’s processor, memory, storage, communication
ports and peripheral devices

Answer 4

hardware

Question 5

Includes operating system (OS) and
software applications

Answer 5

software

Question 6

three general
categories if computers

Answer 6

supercomputer, main frame computer and personal computer

Question 7

The fastest, largest, most
powerful and most expensive computer.

Answer 7

supercomputer

Question 8

This is a little smaller and
less powerful than the supercomputer, but, like the
supercomputer it is also expensive.

Answer 8

mainframe computer

Question 9

This is the computer that
most people use in their daily lives. This computer is
much smaller, less powerful and less expensive than
the supercomputer and the mainframe computer.

Answer 9

personal computer (pc)

Question 10

a computer’s electronic and
mechanical parts. also
includes input devices, output devices, system unit,
storage devices and communication devices. Without
these components we would not be able to use the
computer.

Answer 10

Computer Hardware

Question 11

is any hardware component
that allows you the user to enter data into the computer.

Answer 11

input devices

Question 12

Six of the most widely used input devices

Answer 12

keyboard, mouse, scanner, microphone, digital camera, pc video camera

Question 13

any
hardware component that gives
information to the user.

Answer 13

output devices

Question 14

Three commonly used output devices

Answer 14

monitor, printer, speaker

Question 15

The computer will not work without it. also
called programs. These are the instructions that tell the
computer what to do and how to do it. The
system software also called the operating system (OS) actually
runs the computer.

Answer 15

Computer Software

Question 16

The two main categories
of software

Answer 16

system software and application software.

Question 17

also called the operating system (OS) actually
runs the computer.

Answer 17

system software

Question 18

controls all the operations of the
computer and its devices. All computers use it and without it, the
application software will not work.

Answer 18

computer software

Question 19

The most common
OS on a Mac computer

Answer 19

Mac operating system

Question 20

The most common
OS on a PC

Answer 20

windows operating system

Question 21

a program that allows
users to a specific ask on the computer.

Answer 21

application software

Question 22

Four examples of common application
software

Answer 22

word processing application, spreadsheet application, email application, internet application

Question 23

This program allows you to
type letters, assignments and do any other written
activity on the computer.

Answer 23

Word processing application

Question 24

microsoft excel is an example of this. One
can use this program to create charts and do
calculations.

Answer 24

spreadsheet application

Question 25

Outlook Express is an e-mail program that allows you to receive and send e-mails.

Answer 25

email application

Question 26

Internet Explorer is a program that allows you to get connected to the Internet and look at Web sites like the one you are reading now.

Answer 26

internet application

Question 27

Storage keeps data, information and instructions for use in the future. All computers use storage to keep the software that makes the hardware work. As a user you store a variety of data and information on your computer or on storage media. They are the physical materials on which data, information and instructions are kept. When a user saves information or data to a storage medium he or she is storing a file, and this process is called writing. When the file is opened the process is called reading.

Answer 27

storage media

Question 28

Common storage media

Answer 28

hard drive, floppy disk, cd & dvd, usb flash drive

Question 29

This storage medium which looks like the one below, is a hard drive. This medium comes with the computer and is always inside the computer. It stores all the programs that the computer needs to work. In addition users store their data and information on the hard drive.

Answer 29

hard drive

Question 30

This storage medium is considered to be a portable storage medium. You put it into the computer save your information on it, take it out, and take it with you wherever you go.

Answer 30

floppy disk

Question 31

These types of storage media hold much more information than a floppy disk. They are also considered portable storage. These types of storage media come in different forms. This means that there are CDs and DVDS that you can only save information on but you cannot erase the information. In addition there are those that can both save information on and erase the information you have saved.

Answer 31

cd & dvd

Question 32

This is a storage medium that is very easy to carry around and it also holds more data than a floppy disk. As you can see from the picture below it is very small when compared with the others.

Answer 32

usb flash drive

Question 33

Taking care of your computer is just as important as taking care of your books. Both the internal and the external parts of the computer have to be cared for. Scanning, defragging and reformatting are some of the activities performed to clean up the hard drive. These activities are best left to a grown up and such you should not attempt them.

Answer 33

computer care

Question 34

Dust your computer to keep it free of dust and dirt.

Answer 34

keep dust away

Question 35

Do not eat or drink while working on the computer

Answer 35

keep food away

Question 36

Make sure your hands are clean before you type on the keyboard of click the mouse.

Answer 36

use clean hands

Question 37

If you are having problems with your computer, ask for help. Do not bang or hit the computer.

Answer 37

treat with respect

Question 38

Seeing that the computer is connected to electricity, this means that lightning could be conducted to your computer through the electrical connection. For this reason, it is best not to use your computer during a storm.

Answer 38

keep off

Question 39

A computer virus is a program written by a person on purpose to harm other peoples' computers. A computer virus is passed from one computer o another when you share and download files without the protection of an antivirus software. For this reason, you should get permission before downloading files

Answer 39

stop virus attack

Question 40

how you handle your CDs will determine how long they will last. Always hold the CD correctly.

Answer 40

handle with care

Question 41

certain tasks you can perform to ensure your computer is clean

Answer 41

keep dirt away, keep food away, use clean hands, treat with respect, keep off, stop virus attack, handle with care

Question 42

sometimes called simply “the Net” is a worldwide system of computer networks – a network of networks which users at any one computer can if they can, if they have permission, get information form any other computer (and sometimes talk directly to users at other computers). * It also a means of connecting a computer to any other computers are connected over the Internet, they can send and receive all kinds of information such as text, graphics, voice, video, and computer programs.

Answer 42

The Internet

Question 43

Different Types of Internet Connections

Answer 43

dial-up, DSL, cable, wireless fidelity, satellite, cellular

Question 44

cheap but slow. A modern (internal or external) connect to the Internet after the computer dials a phone number. This analog signal is converted to digital via a land-line serviced by a public telephone network. Telephone lines are variable in quality and the connection can be poor at times. The lines regularly experience interference and this affect the speed, anywhere form 28k to 56k. Since a computer or other devices shares the same line as the telephone, they can’t be active at the same time

Answer 44

dial-up

Question 45

stands for Digital Subscriber Line. It is an internet connection that is always “on”. This uses 2 lines so your phone is not tied up when your computer is connected. There is also no need to dial a phone number to connect. DSL uses a router to transport data and the range of connection speed, depending on the service offered, is between 128k to 8 Mbps.

Answer 45

DSL

Question 46

provides called an internet connection through a cable modem and operates over cable TV lines. There are different speeds depending on if you are uploading data transmissions or downloading. Since the coax cable provides a much greater bandwidth over dial-up or DSL telephone lines, you can get faster access. Cable speeds range from 512k to 20 Mbps

Answer 46

cable

Question 47

does not use telephone lines or cables to connect to the internet. Instead, it uses radio frequency. Wireless is also an always an connection and it can be accessed from just about anywhere. Wireless network are growing in coverage areas by the minute so when I mean access from just about anywhere, I really mean it . Speed will vary, and the range between 5 Mbps to 20 Mbps.

Answer 47

wireless fidelity

Question 48

accesses the internet via a satellite in Earth’s orbit. The enormous distance that a signal travels from earth to satellite back again, provides a delayed connection compared to cable and DSL. Satellite connection speeds are around 512k to 2.0 Mbps.

Answer 48

satellite

Question 49

provides wireless internet access through cell phones. The speeds vary depending on the provider, but the most common are 3G and 4G speeds. A 3G is a term that describes a 3rd generation cellular network obtaining mobile speeds around 2.0 Mbps. 4G is the fourth generation of cellular wireless standards. The goal 4G is to achieve peak mobile speeds of 100 Mbps but the reality is about 21 Mbps currently.

Answer 49

cellular