Chapter 15

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1.   True
2.   False
3.   True 
4.   True
5.   True
6.   False
7.   True
8.   True
9.   True
10. True

Chapter 14

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1.   True
2.   False
3.   False
4.   True
5.   False
6.   False
7.   True
8.   True
9.   True
10. True

Chapter 13

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1.   True
2.   True
3.   True
4.   True
5.   True
6.   False
7.   False
8.   True
9.   False
10. False

Chapter 12

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1. False
2. True 
3. False 
4. False 
5. False 
6. True
7. False
8. False
9. True
10.True
11.False

Chapter 11

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1.  True 
2.  True 
3.  False 
4.  True 
5.  False 
6.  True 
7.  True
8.  True
9.  False
10.False
11.True
12.False

Chapter 10

Discovering Computers 2011 : Living in a Digital World Answer

True/False

1.  True
2.  True
3.  False
4.  True
5.  False
6.  False
7.  True
8.  True
9.  False
10. True

Chapter 9

Discovering Computers 2011 : Living in a Digital World Answers

True/False

1.  True
2.  False
3.  True
4.  False
5.  True
6.  True
7.  False
8.  True
9.  False
10. True
11. True

Chapter 8

Discovering Computers 2011 : Living in a Digital World Answers

True/False

1.   False
2.   False
3.   True
4.   False
5.   True
6.   True
7.   True
8.   True
9.   False
10. True

Chapter 7

Discovering Computers 2011 : Living in a Digital World Answers

True/False

1.   True
2.   False
3.   False
4.   False
5.   False
6.   True
7.   False
8.   True
9.   False
10. True
11. False
12. False
13. True 

GSLC Assignment - Storage and OS

1. Information or interesting fact about :

a. Seagate Technology

Seagate Technology is one of the world’s largest manufacturers of Hard Disk Drives.

Seagate has been a leader in the development of the hard disk drives since releasing the 5 MB ST-506 drive in 1980, the first 5.25-inch hard drive.

They were a major supplier in the microcomputer market during the 1980s, especially after the introduction of the IBM XT in 1983. In 1989 they finalized the purchase of Control Data Corporation's Imprimis division, makers of the well regarded Wren product line.

This gave Seagate access to the Wren's voicecoil-based technology. In 1991 they introduced the 7,200 RPM Barracuda line, which remains their high-end offering to this day. 

b.SanDisk Corporation

SanDisk Corporation is an American multinational corporation that designs, develops and manufactures data storage solutions in a range of form factors using the flash memory, controller and firmware technologies.

SanDisk has more than 240 000 store fronts across the world.

SanDisk currently holds more than 2100 patents, more than 1100 foreign patents and more than 1100 patent applications pending in the U.S. Every company that uses one of their patents needs to pay royalties to SanDisk, and nearly every handset vendor has embedded SanDisk technology.

Their revenue is currently sitting at US$ 4.82 billion, with a total profit of US$ 1.30 billion for 2010. Their total equity is estimated to be around US$ 5.78 billion.

SanDisk has been operating in South Africa for the last 10 years, and is currently breaking into the Nigerian and Kenyan markets. They are currently selling about 35 000 flash memory units a month.

c.Samsung Storage Devices

Samsung electronics is a South Korean multinational electronics company headquartered in Suwon, South Korea. The product which the most known is their Smartphone, the Samsung Galaxy series.

There was a scandal about Apple Inc. v. Samsung Electronics Co., Ltd. It was the first of a series of ongoing lawsuits between Apple Inc. and Samsung Electronics regarding the design of smartphones and tablet computers between them, the companies made more than half of smartphones sold worldwide as of July 2012. 

In the spring of 2011, Apple began litigating against Samsung in patent infringement suits, while Apple and Motorola Mobility were already engaged in a patent war on several fronts.

In the area of storage media, in 2009 Samsung achieved a ten percent world market share, driven by the introduction of a new hard disk drive capable of storing 250Gb per 2.5-inch disk.

In 2010, the company started marketing the 320Gb  HDD, the largest in the industry. In addition, it was focusing more on selling external hard disk drives.

d.Hitachi

Hitachi is a Japanese multinational engineering and electronics conglomerate company headquartered in Chiyoda, Tokyo, Japan. Hitachi was founded by electrical engineer Namihei Odaira in 1910 in the mountains of Ibaraki Prefecture, Japan. The first Hitachi product was a 5-hp induction electric motor. Hitachi’s first export was the electric fan in 1926 and the destination country was the US.

Hitachi Global Storage Technologies (Hitachi GST) manufactures computer hard drives. There are 3 main ranges: Hitachi Travelstar, Hitachi Deskstar and Hitachi Ultrastar. On March 7, 2011 Hitachi Global Storage Technologies was purchased by Western Digital Corporation for $3.5 billion in cash and $750 million in Western Digital common stock.

2. Gather information and discuss about several operating system that you know. Mention the operating system name and usages. (PC, Server, embedded, and mobile)

The OS for PC

a.Windows 8

Windows 8 is currently the newest Operating System produced by Microsoft. This Operating System was released to manufacturing on 1 August 2012, and was released generally availability on 26 October 2012.

Compared to the predecessor Windows 7, the boot up time of Windows 8 is a lot faster. At first glance you will see that the new Windows 8 menu looks like OS in the Windows Phone. This is because of the new features in Windows 8, which is tiled based interfaced or Metro UI. 

The UI system seems like touch screen menus in tablet devices and smartphone.

b.Mac OS

Mac OS X Mountain Lion is the 9^th major released of OS X. OS X Mountain Lion is produced by Apple Inc. and it was released on 25 July 2012. 

Mac OS X Mountain Lion includes features from previous versions of the Macintosh operating system such as large photo-quality icons, built-in networking support, e-mail, chat, online shopping, enhanced speech recognition, optical disc burning, and enhanced multimedia capabilities.

In addition the new features in Mac OS X Mountain Lion :
1. Social integration
2. Game Center for Mac
3. Improved Notifications
4. AirPlay
5. IMessages
6. Notes and Reminders
7. Dictation on the Mac
8. Power Nap
9. Better security

OS for Server

a.Windows Server 2012

Windows Server 2012, is the current release of Windows Server. It is the server version of Windows 8 and the successor to Windows Server 2008 R2. The software was generally available to customers starting on September 4, 2012 and worldwide through multiple channels in September 2012.

Unlike its predecessor, Windows Server 2012 has no support for Itanium-based computers, and has four editions. Various features were added or improved over Windows Server 2008 R2, such as an updated version of Hyper-V, an IP address management role, a new version of Windows Task Manager, and the new ReFS file system. 

Here are some features in Windows Server 2012 :
1. New Server Manager: Create, Manage Server Groups
2. Better Edition, SKU Selection
3. A Command-Line First, GUI-Second Mentality
4. Hyper-V Replication
5. Expanded PowerShell Capabilities
6. Storage Spaces: Flipping Complexity on Its Head
7. DirectAccess: A VPN Without the Pain of a VPN
8. Dynamic Access Control: New Way of Thinking
9. Resilient File System: An Evolution of NTFS
10. Out-of-the-Box IP Address Management

b.Linux

Linux is an open source Operating System. Linux also is a multipurpose operating system. So, Linux is it can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers and video game consoles, to mainframes and supercomputers.  Thus some network servers use Linux as their operating system. 

With Linux, a network administrator can configure the network, administer security, run a Web server, and process e-mail. Clients on the network can run Linux, UNIX, or Windows.

Operating System in Mobilephones

a.Iphone OS 6

Iphone OS 6, developed by Apple Inc. is an operating system for iPhone and iPod touch, With the iPhone OS, users can manage contacts and notes, send and receive e-mail and text messages, take pictures, record videos, record voice messages, view a compass, connect to the Internet wirelessly and browse the Web, check stocks, access maps and obtain directions, listen to music, watch movies and videos, and display photos. 

It also provides Wi-Fi access to the iTunes Music Store.

b.Android

Android is a Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablet computers. Android OS is designed by Google Inc. it’s used on more 20 different types of smartphones.

Android OS allows programmers to design programs specifically for devices supporting this operating system. Android OS contains features such as access to e-mail accounts, an alarm clock, video capture, access to Google Apps, Wi-Fi access, and easy Web browsing.

The Android OS is, in strictly legal terms, open source. Android is released under the Apache 2.0 software license, which allows anyone to use, modify and redistribute the code. But while it might meet the letter of the law, Android falls short on the other two points.

In the software world, “open” can be defined around three core traits: a license that insures the code can be modified, reused and distributed; a community development approach; and, most importantly, assurance the user has total freedom over the device and software.

It’s the lack of community-based development that Android’s critics say makes it no more “open” than Apple’s locked-down, decidedly not-open iOS model.

Unlike major open source projects like Firefox or the Linux kernel, you can’t see what’s happening behind the scenes with Android, nor can small developers contribute to the project in any meaningful way. Google typically releases major updates to Android at press conferences, not unlike those Apple uses to show off new iPhone features.

Once the code is released, Android developers can download it and do what they want with it, but they have no way of seeing what’s happening behind the scenes every day.

PTI Assignment

From now on, i will use this blog to submit my PTI tasks which is given by Mr. Tri Djoko Wahjono, PTI lecturer.

Chapter 5

Discovering Computer 2011 Living in a Digital World Answers

Page 293-294

True / False

1.   True

2.   True

3.   False

4.   True

5.   False

6.   False

7.   False

8.   False

9.   False

10. True

11. True

12. True

Multiple Choice

1. C

2. A

3. B

4. C

5. D

6. C

7. C

8. C

Matching

1.   b

2.   g

3.   d

4.    j

5.   e

6.   a

7.   h

8.   f

9.   i

10. c

Short Answer

1. What are three different types of mouse devices?

Three different types of mouse devices are mechanical, opt. mechanical, and optical.

- What makes them different from each other?

Mechanical: Has a rubber or metal ball on its underside that can roll in all directions. Mechanical sensors within the mouse detect the direction the ball is rolling and move the screen pointer accordingly.

Opt. mechanical: Same as a mechanical mouse, but uses optical sensors to detect motion of the ball.

Optical: Uses a laser to detect the mouse's movement. You must move the mouse along a special mat with a grid so that the optical mechanism has a frame of reference. Optical mice have no mechanical moving parts. They respond more quickly and precisely than mechanical and optomechanical mice, but they are also more expensive.

2. Name at least five mouse operations.

Single-click, Double-click, Triple-click, Drag, right click

- Describe and give examples of each of the mouse operations

that you chose.

Single-click: clicking the main button.

Ex: The user click left / right mouse button to any object on desktop.

Double-click: clicking the button two times in quick succession counts as a different gesture than two separate single clicks.

Ex : When you want to open an application, you do double click on the icon of that application.

Triple-click: clicking the button three times in quick succession.

Ex: If you want to block all words in one sentence, try to do triple click.

Drag: pressing and holding a button, then moving the mouse without releasing.

Ex: Block a paragraph by holding the right click and moving the mouse without releasing (drag)

Right-click: clicking the secondary button.

Ex: You do this when you want to see the optional features of any application (properties).

3. What is OCR (optical character recognition)?

Optical Character Recognition (OCR) is a technology that involves reading typewritten, computer printed, or hand-printed characters from ordinary documents and translating the images into a form that the computer can process.

- What is OMR (optical character recognition)?

Optical Mark Recognition (OMR) is a technology that reads hand-drawn marks such as small circles or rectangles.

4. What is the most widely used biometric device today?

The most widely used biometric device today is fingerprint reader.

- Describe how the device works.

A fingerprint reader, captures curves and indentations ofa fingerprint to identify whether the ‘inputted’ fingerprint are the right one.

5. What is the Americans with Disabilities Act (ADA)?

 Americans with Disabilities Act are rules for company with 15 or more employees to make a reasonable attempt to accommodate the need of physically challenged workers.

- How might gesture recognition and computerized implant devices help physically challenged users in the future?
Gesture recognition and Computerized implant devices are a way for human to provide a natural computer interface for the physically challenged people through a means of just moving a small part of the body that are still functioning.

Chapter 2

Discovering Computers 2011 : Living in a Digital World Answers

True/False
1.   False
2.   False
3.   True
4.   False
5.   True
6.   False
7.   True
8.   True
9.   False
10. False
11. True
12. True

Multiple Choice
1. c
2. b
3. c
4. a
5. a
6. a
7. c
8. c

Checkpoint
1.   h
2.   b
3.   f
4.   e
5.   a
6.   i
7.  d
8.   g
9.   j
10. c


Short Answers
1. - Cable internet service provides high-speed Internet access through the cable television network via a cable modem
 - DSL provides high-speed internet connections using regular copper telephone lines
 - Wi-Fi uses radio signals to provide high-speed internet connections to compatible or properly equipped       wireless computers and devices.

Regional ISP provides internet access to a specific geographic area while national ISP provides internet in cities and towns nationwide.

2. Static webpage allows all visitors to see the same content. Dynamic webpage allows users to customize some or all content.

Website is a collection of related Web pages and associated items, such as documents and pictures, stored on a Web server.

3. Web application is a web site that allows users to access and interact with software through a web browser on any computer and device that is connected to the internet.

The features and examples of web applications are : Google Docs ( word processing, spreadsheets, presentations), Turbo Tax Online ( tax preparation), Windows Live Hotmail (e-mail)

4. The three types of specifications used by content aggregators to distribute content are RSS 2.0, Atom, Web Slices

Accuracy of a website can be evaluated by using evaluation criteria : affiliation, audience, authority, content, currency, design, objectivity.

5. Web publishing is the development and maintenance of Web pages.

The 5 major steps in Web publishing are plan a website, analyze and design a website, create a website, deploy a website, maintain a website.

Chapter 1

Discovering Computer 2011 Living in a Digital World Answer 

True / False

1.   True

2.   False

3.   False

4.   True

5.   False

6  . False

7.   True

8.   True

9.   True

10. True

11. False

Multiple Choice

1. b

2. a

3. c

4. a

5. a

6. b

7. b

8. d

Matching

1.   a

2.   j

3.   g

4.   d

5.   h

6.   b

7.   f

8.   i

9.   c

10. e

Short Answers

1. A computer is an electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data according to specified rules, produce results, and store the results for future use.

The information processing cycle is input, process, output, storage.

2. Prolonged or improper computer use can lead to injuries or disorders of the hands, wrists, elbows, eyes, neck, and back. Besides, computers usage can lead to another health risk, computer addiction .Computer addiction occurs when someone becomes obsessed with using a computer.

Computer manufacturing processes and computer waste are depleting natural resources and polluting the environment. When computers are discarded in landfills, they can release toxic materials and potentially

dangerous levels of lead, mercury, and flame retardants.

3. A Web application is a Web site that allows users to access and interact with software from any computer or device that is connected to the Internet.

Web 2.0 provide a means for users to share personal information (such as social networking Web sites), allow users to modify the Web site contents (such as some blogs), and/or have software built into the site for users to access (such as Web applications).

4. Seven categories of computer : PC, mobile computers/devices, embedded computer, super computer, mainframes, servers, and game consoles.

A computer’s size, speed, processing power, and price determine the category it best fits.

5. Many Web sites provide up-to-date medical, fitness, nutrition, or exercise information. These Web sites also maintain lists of doctors and dentists to help you find the one that suits your needs. They have chat rooms, so that you can talk to others diagnosed with similar conditions. Some Web sites even allow you to order prescriptions online.

Through telemedicine, health-care professionals in separate locations conduct live conferences on the computer. While telesurgery, also called remote surgery, a surgeon performs an operation on a patient who

is not located in the same physical room as the surgeon.

Chapter 4

Discovering Computer 2011 Living in a Digital World Answer

Page 247-248

True / False

1.   True

2.   False

3.   True

4.   True

5.   False

6.   True

7.   True

8.   True

9.   False

10. False

11. False

12. False

Multiple Choice

1. B . CPU

2. B . arithmetic logic unit

3. B.  registers

4. B . massively parallel processing

5. C . firmware

6. B . port replicator

7. A . docking station

8. D . front side bus

Matching

1. h

2. a

3. f

4. b

5. d

6. e

7. g

8. c

9. i

10. j

Short Answer

1. What are two types of designs of Tablet PCs?
Tablet PCs come in two basic designs: convertible and slates.

- What are the differences in the designs of the two types of Tablet PCs?

Convertibles are similar to traditional laptop computers except for the screen which can open to resemble a monitor, swivel 180 degrees and fold back onto the keyboard.

Slates do not have integrated keyboards and therefore rely more heavily on entering data through the stylus. Docking stations and keyboards are available for slates, but may need to be purchased separately.

2. What is the motherboard?

Motherboard  is the main circuit board of the system unit.

- What is a computer chip?
Computer chip is a small piece of semiconducting material on which the integrated circuit are etched.

3.  What are the four basic operations in a machine cycle?

The four basic operations of a machine cycle is fetching, decoding, executing, storing.

- What are some functions of registers?

Register functions include storing thelocation from where an instruction was fetched,storing an instruction while the control unitdecodes it, storing data while the ALU computesit, and storing the results of a calculation.

4.  What types of devices might be Bluetooth enabled?

Computers, peripherals, smart phones, PDAs, mobile phones, laptop, and tablet

- Describe three ways in which a computer can become Bluetooth enabled !

A computer can become Bluetooth enabled by purchasing a Bluetooth wireless port adapter, Bluetooth PC Cards and ExpressCard modules for traditional notebook computers and Tablet PCs, and Bluetooth cards for smart phones and PDAs.

5.  What is compressed air used for with regards to caring for your computer?

Compressed air can be used to removes dust andlint from difficult-to-reach areas and removes sticky liquid spilled on keyboards.

- How should you prepare for cleaning your computer?

Before cleaning a computer, turn it off and unplug it from any electrical source.

Disconnect all cables from the port. Use compressed air to blow away dust on the computer opening. Then wipe the case of the computer using antistatic wipe, use cleaning solution and a soft cloth to clean the computer screen.

Prepare also antistatic wristband, vacuum cleaner, and antistatic wipe to clean the inside of the computer.
If you are not comfortable cleaning the inside of your computer, call professional to do it for you.

Chapter 3

This assignment is given by Mr. Tri Djoko Wahjono, my PTI lecturer.

Chapter 3 – Discovering Computer 2011- Living in a Digital World

Page 183 – 184

I.True / False

1. False
2. False
3. False
4. True
5. True
6. True
7. True
8. False
9. True
10. True
11. True
12. True

II.Multiple Choice

1. A. Packaged Software

2. A. A software suite

3. B. Project management software

4. C. Document management

5. C. Personal DTP software

6. B. Photo management software

7. C. Newsgroup/message board

8. B. Online Help

III. Matcing

1.     I           6.L

2.     E          7.A

3.     J           8.G

4.     B          9.K

5.     D         10.C

Short Answer

1. Utility programs are normally software tools which resolve problems, or aid in the optimal use of a computer. Examples:  Examples:

• Anti-virus utilities scan for computer viruses.

• Archive utilities output a stream or a single file when provided with a directory or a set of files. Archive utilities, unlike archive suites, usually do not include compression or encryption capabilities. Some archive utilities may even have a separate un-archive utility for the reverse operation.
• Backup utilities can make a copy of all information stored on a disk, and restore either the entire disk (e.g. in an event of disk failure) or selected files (e.g. in an event of accidental deletion).
• Cryptographic utilities encrypt and decrypt streams and files.
• Data compression utilities output a shorter stream or a smaller file when provided with a stream or file.

• Malware, short for malicious software, is software used or created to disrupt computer operation, gather sensitive information, or gain access to private computer systems. It can appear in the form of code, scripts, active content, and other software.'Malware' is a general term used to refer to a variety of forms of hostile or intrusive software. Malware includes computer viruses, worms, trojan horses, spyware, adware, and other malicious programs.

2.Presentation softwares allow users to do their presentation with some features like slide shows,arranged word and design which makes the presentation not boring the attendants, and the users can insert image,music,or video which is  related to the presentation’s topic which will help the presentation easier to be understood by the attendants.The users also able to insert tables,charts and etc to give more information in the presentation.

People use media types like the images,audio-clips,video-clips, and photos to enhance the multimedia presentation

3. Travel and Mapping software display maps by searching for anaddress, postal code, telephone number, or pointof interest (such as airports, lodging, and historicalsites).

Reference software includesencyclopedias, dictionaries, and health/medical guides.

4. Computer-based training (CBT) is a type of education in which studentslearn by using and completing exerciseswith instructional software.

Athlete can learn the basic of some sports, while military and airlines use CBT simulations to train pilots to flyin various conditions and environments.

5. Many web sites offers web-based training to public for free, while there are some that need a registration and payment to take complete course. Web-based training is popular in business,industry, and schools for teaching new skills orenhancing existing skills of employees, teachers,or students.

To enhance communications,e-learning systems also may include feeding e-mail, blogs, wikis, newsgroups,forums, chat rooms, and groupware.