Malware

1) Virus – a virus is a  small software program that are designed to spread from one computer to another and to interfere with computer operation. You can deal with this by buying Malwarebytes Malware Remover or any other program that revomes viruses.

2) A Trojan refers to a program that appears as something you may think is safe, but hidden inside is usually something harmful, probably a worm or a virus. To deal with this situation you need to have a program which stops the Trojan from mucking up your computer.

3) Worm – A computer worm is a self-contained program, that is able to spread functional copies of itself or its segments to other computer systems usually via network connections. You coulkd deal with this  by getting a program whihc will instantly remove the worm of your computer. It may affect your computer my sending you silly messages.

4) Spyware- Spyware is any technology that aids in gathering information about a person or organization without their knowledge. To deal with it you haft ot get a program from the interent to stop this from getting on your computer. It would affect your computer by showing dodgy advertisment that pops up on your home screen

5) Adware - Adware is a type of software that is downloaded to your computer to show you advertisements. To deal with this you haft to do what you done with spyware, you must get a program from the interenet to stop this from damaging your computer. tis would affect your computer my popping up with unwanted advertisment on your home screen.

MAC Address - The unique number for every computer.

IP Address (give an example) – the number for the network of the PC.

Example: 192.168.0.2

Subnet masks - The address of the computer.

Example: 255.255.255.0

Hub – A device that can transfer information from one Ethernet device to another using an Ethernet connection.

Switch – A network device that connects to network segments.

Wireless ISR - provides the information you need to install and configure your wireless devices.

Router - Device in computer network that forwards data packets.

Server – Programs that run on a machine, providing a specific service to other machines.

DHCP -An IP Address used for connecting to different networks.

Peer To Peer Network – A network that does not have a central computer or dedicated server.

Client Server Network –A type of network setup that utilizes both servers and clients.

Packet- Logical grouping of information which includes a header that contains control information and usually user data

Ping (Packet Internet Gopher) – used to test the IP address of your own or other computers by typing ping on command prompt and then the IP address the press enter and see if the packets come back.

Ping of Death-

Firewall- a device that decides on which packets contain anything bad or not, if so it destroys it.

Tracert- A utility on windows that allows you to follow the route a packet takes

IPconfig/all- gives you information on the network part of the computer if typed into command prompt

Printers and Scanners 

 

  

 Step One go onto a website that can download the printer programm 

 

Step Two go to device and printers 

 

Step Three get rid of the old printer 

 

Step Four then add a local printer  

 

Step Five Then do the driver update to put onto your printer 

 

  

Step Six Select the language you want to use 

 

  

Step Seven Select INSTALL to install the printer 

 

Step Eight Select CONTINUE if you finished reading instructions 

 

Step Nine Select I AGREE if you agree with the terms and conditions. 

 

Step Ten Select CONTINUE  

 

Step Eleven Select INSTALL if you’re ready to copy to driver, Then CONTINUE 

 

Step Twelve Select CONTINUE if you’re using a USB Cable 

  

  

Step Thirteen Wait for the installation to the computer to finish. 

 

Step Fourteen Select NO to share with other computers 

 

Step Fifteen Select CONTINUE to test and see if the printer works. 

 

  

Step Sixteen Wait for printer to stop printing 

 

Step Seventeen Select CONTINUE   

  

 

  

Step Eighteen Select CONTINUE and CREATE A SHORCUT ICON ON MY DESKTOP 

  

Laser Printers 

 

                                                                                       View Video of laser printer 

Disadvantages 

1) Its expensive 

2) They can only hold one type of paper 

Advantage 

1)      It is very fat 

2)      Very modern 

3)      Less messy 

4)      Not Noisy

Impact Printers

 

View Video for impact printer 

Disadvantages 

1) Noisy 

2) Low resolution graphics 

3) Limited colour capability 

Advantages 

1)      Inexpensive consumables 

2)      Continues feed paper 

3)      Carbon copy printing ability 

4)  Slow printing, 32-76 character per sec 

Impact printers are very basic printers. Impact printers have print heads that strike the inked ribbon, causing characters to be imprinted on the paper 

Inkjet Printers 

 

View Video of inkjet printer 

Disadvantages 

1) Nozzels are prone to clogging 

2) Ink is expernsive 

3) Ink is wet after printing 

Advantages 

1) Low cost 

2) High resolution 

3) Quick to warm up 

Inkjet printers produce high-quality prints. Inkjet printers are easy to use and inexpensive compared to laser printers. 

Solid-ink Printers 

 

Disadvantage 

1) Printer is expensive 

2) Ink is expensive 

3) They ate slow to warm up 

Advantage 

1) Produce vibent color 

2) Easy ot use 

3) Different types of paper 

Solid-ink printers use solid sticks of ink rather than toner or ink cartridges. Solid-ink printers produce high-quality images. 

Thermal Printers 

  

View Video of thermal printer
 

Disadvantages 

1) Paper is expensive 

  

Advantages 

1) Longer life because there are few moving parts 

2) Images are poor quality 

3) Paper has a short self life 

The thermal paper used in thermal printers is chemically treated and has a waxy quality. Thermal paper becomes black when heated. 

Dye-Sublimation Printers 

 

View Video of dye-sublimation printers  

Disadvantages 

1) Media can be expensive 

Printer are better colour for greyscale 

Advantage 

1) Printers produce high-quality images 

2) Overcoat layer reduces smearing 

Dye-sublimation printers produce photo-quality images for graphic printing. This type of printer uses solid sheets of ink that change directly from solid to gas, in a process called sublimating .

 

 Flatbed Scanners 

 

Flatbed scanners are often used to scan books and photographs for archiving. An electronic image is placing the book or photograph face down on the glass. The scanner head, consisting of an array of image sensors, lies beneath the glass and moves along the item, capturing the image.

   

Handheld Scanners 

 

A handheld scanner is small and portable. It is difficult to smoothly scan an image using a handheld scanner. To scan an item, carefully pass the scanner head across the item that you want to scan. As with a flatbed scanner, digital images are made from the images collected by the handheld scanner. 

Drum Scanner 

 

Drum scanners produce a high-quality transfer of an image. Drum scanners are usually used commercially but are being replaced by lower-priced, high-quality flatbed scanners. Many drum scanners are still in use for high-end reproductions, such as archiving photographs in museums.

Introduction
Chapter 6 is about different kinds of laptops and portable devices (PDA, Smart Phone, Laptops etc..)

                                                                                    

laptops and other portable devices
A laptop is a computer that can used anywhere as it is a portable device. The components are that have a AC power source or a rechargeable battery, integrated display screen lid, iregated keyboard, hot swappable drives and pheripheals.

A PDAs offer features such as games, interent, e-mail, text messaging, and many other features offered by PCs.

A smart phone are phones with many built-in PDA capabilities. PDAs and Smartphones can run some of the same software as laptops.

 

The components of laptops
The most feature of a laptop is its size. The design of the laptop places the keyboard, screen, and internal components into a small, portable case.

A rechargeable battery allows the laptop to function when it is disconnected from an AC power source.

The first laptop were used by business people who hat to access and enter data whilst they were away from work, The use of laptops was limited due to expense, weight, and limited capabilities.

 

Compare and contrast desktop and laptop components
Desktop components usually meet form factors. They can be made by different manufacturers and they can often use the same components. A DVD/CD-RW drive is a brief example of a desktop component that has a standard form factor.

Laptop components are much more specialized than desktop components. This is differnet because laptop manufacturers focus on laptop components. Manufacturers design laptop components to follow their own specific form factors.

 

Different mobile phone standards

 The first generation (1G) of cell phones began service in the 1980s. First-generation phones primarily used analog standards, including Advanced Mobile Phone System and Nordic Mobile Telephone.

In the 1990s, the second generation (2G) of cell phones was marked by a switch from analog to digital standards. Second-generation cell standards included Global System for Mobile (GSM) and Integrated Digital Enhanced Network (iDEN).

Third generation (3G) standards enable cell phones to go beyond simple voice and data communications. It is now common for cell phones to send and receive text, photos, and video. It is also common for 3G cell phones to access the Internet and to use the Global Positioning System (GPS).

Fourth-generation (4G) standards have been used by many users. Higher data rates will allow users to download files, such as video and music, faster than what was available with standards of previous generations.

Hazardous Environments

Because laptops are mobile like, they are used in different environments. Some environments are more dangerous to laptops. Thats why people dont eat or drink around laptops because it creates a dangerous condition.

If a drink was spilled into the keyboard of  a laptop. Many components are placed in small beneath the keyboard. Spilt  liquids on the keyboard would mess up the laptop and theres a low chance that it would work again.

Troubleshoot on laptops and portale devices

If you ever have a troubleshoot check if the repair is cost-effective. also if you have a toubleshoot follow these steps from 1 – 6:

Step 1: you should gather information from costumer.

Step 2: Tell that costumer about the issue.

Step 3: Try the  quickest solution first.

Step 4: Gather  data from your computer.

Step 5:  Check and see what the problem and implement the solution.

Step 6: Close with that costumer.

 

Power management

power management is what can you can use with a laptop and a computer to make more time for the battery  life power to last longer much longer. It sort out the power flowing through the component. Laptop feature moe than computer becasue they are  portable and computer arent. When the laptop is plugged into a AC power source the laptop battery gets charged automatically and the power management sends electricity from power AC source to the laptop components. When the battery has done charged or unplugged from the AC power source,  the  laptop power management takes electricity from the battery and sends it to the laptop.

 The two methods of power management is:

APM is an earlier version of power management with APM the bios was used to control the setting of the power management,

ACPI has replaced APM ACPI offers additionalpower management features with ACPI the operating system controls the settings of the power management,