Computer Merit Badge Merit Badge College 9 Feb 2008

Computer Merit Badge

Merit Badge College

9 Feb 2008

Requirement 1 - Online safety.

Requirement 1 – Discuss with your counselor the tips for online safety.

Requirement 1 - Online safety.

• Kidnapping/Violence Safety

Internet kidnap warningFinancial Times - Jan 1, 2007Parry Aftab, a children's advocate, told a congressional commission that 3000 children were kidnapped in the US last year because of online messages posted ...

• Financial Safety

Online fraud costs $2.4 billion a year

Identity Theft Victimizes Millions, Costs Billions About 3.3 million American consumers discovered within the last year that their personal information had been used to open fraudulent bank, credit card or utility accounts, or to commit other crimes, according to the Federal Trade Commission's first national survey on identity theft. The commission, in a report issued today, said these cases had collectively cost businesses $32.9 billion and consumers $3.8 billion.

Identity Theft: Costs More, Tech Less

The median actual dollar loss for identity theft victims was $31,356. Identity theft may be far more costly to victims than previously believed…

Requirement 1 - Online safety.

Requirement 1 - Online safety.

• Computer System Safety

Net search virus cost $90 million

ABOUT 5,000 businesses have been affected by the MyDoom virus which caused Google to crash this week. According to mi2g, the British-based security firm, the worldwide damage of the virus is estimated to have cost between $85 million and $95 million.

Computer virus cost skyrockets The virus billed as the world's fastest, most destructive computer bug spread mutations Friday, frustrating computer users and causing damage that could reach an estimated $10 billion worldwide. It masquerades as confirmation of a $326.92 "diamond special" ordered for Mother's Day. If the...

Requirement 1 - Online safety.

• Set and follow family computer rules

• Keep & use computer in family room• Protect your privacy – email address, phone#,

address, school info, picture, passwords, financial info

• Don’t open emails/files from strangers

• Something bad/suspicious tell parents

• Never meet someone from online

Req. 2 – History & impact of computers

Requirement 2

• How has the invention of the computer has affected society, science, and technology?

• Give a brief history of computers.

Req. 2 – History & impact of computers

• 300 BC – Abacus

• 1632 – Slide Rule

• 1617 – Logarithms

• 1642 Pascaline

http://www.computersciencelab.com/ComputerHistory/History.htm

Req. 2 – History & impact of computers

• 1801 - Jacquard Loom

Req. 2 – History & impact of computers

• 1890 – Hollerith machine

Req. 2 – History & impact of computers

• 1944 - Mark I computer - Harvard/IBM. 1st programmable digital computer made in the U.S. 5 tons, 500 miles of wire, 8 feet tall & 51 feet long, ran non-stop for 15 years,

Req. 2 – History & impact of computers

Req. 2 – History & impact of computers

• 1945 – Eniac -20 by 40 foot room, weighed 30 tons, and used more than 18,000 vacuum tubes

Req. 2 – History & impact of computers

• 1959 – IBM Stretch

Req. 2 – History & impact of computers

• 1970s – IBM Mainframes

Req. 2 – History & impact of computers

• 1970s – IBM Mainframes

Req. 2 – History & impact of computers

beads 300 BC

sticks 1600s

gears 1600s

punched cards 1800s

vacuum tube/relays 1940s

transistors 1960s

Integrated Circuits !!!Pentium II - 42,000,000

Req. 2 – History & impact of computers

The number of transistors per integrated circuit doubles about once every two years, while the price of the chip remains the same.

In 1954, a transistor cost $5.52. By 2004, its price tag was a billionth of a dollar.

Req. 4 – How it works

Decimal & Binary

One 64 + one 1 = 64 + 1 = 65

4327 =

4 thousands

+ 3 hundreds

+ 2 tens

+ 7 ones#

of 1

28s

# of

64s

# of

32s

# of

16s

# of

8s

# of

4s

# of

2s

# of

1s

0 1 0 0 0 0 0 1

Computer Speak

“A” →

65 (ASCII) →

01000001 (Binary) →

Req. 4 – How it works

Req. 4 – How it works

Req. 4 – How it works

Data Storage

Removable Data Storage

1972 - 8” 80kB

1978 – 5.25” 800kB

1987 – 3.25” 1440kB

2000’s

5,000,000,000 kb

3,500,000 floppies

Requirement 5 – Do the following: a. Explain what a program is and how it is developed. b. Give three examples of programming languages, and describe their uses. c. Name four software packages you or your family could use, and explain how you would use them. d. Discuss ways you can help protect a computer from viruses and how to keep secure information that has been saved on a computer. e. Describe how computers are linked to form the Internet and the World Wide Web.

Req. 5 – Programs/Web

Req. 5 – Programs/Web

A computer program is a set of instructions to the computer – also referred to as software.

Req. 5 – Programs/Web

Req. 5 – Programs/Web

Data Storage

Req. 5 – Programs/Web

Programming Languages

•BASIC – educational/home

•Visual BASIC – Windows user software

•Fortran – engineering

•COBOL – business

•Visual Foxpro / SQL Server - database

•C / C++ / C# - technical/math/anything

•Visual C++ – Windows C++ user software

Req. 5 – Programs/Web

Software Packages

•Word – writing documents

•Excel – spreadsheets

•Power Point – presentations

•Photoshop – graphics

•AutoCAD – technical drawings

•Cakewalk / Band in Box – music recording

•MathCAD – math calculation

Req. 5 – Programs/Web

Viruses - Software built to hurt your system

LoveLetter, Klez, Melissa, Magistr, Explorer.zip, Nimda, Benjamin, Code Red, Sircam

• Don’t open suspicious emails

• Don’t open any email attachments

• Be careful with internet downloads

• Use and regularly update virus protection software

• Backup your files

Req. 5 – Programs/Web

World Wide Web

•url – web address

•Browser – program to access web

•Html – hypertext markup language

•Hyperlink – a “jump” to another document

6. Do THREE of the following: a. database - create a troop roster b. spreadsheet - develop a food budget for a campout. c. word processor - write a letter, use mail merge d. graphics - draw a campsite plan e. presentation - at least 10 slides. f. Internet search engine, ideas about court of honor g. digital camera - take a picture, put on pc, emailh. computer chip-based devices – describe two

Req. 6 – Use software