Converting Decimal to Binary Quiz

Number Systems

• Decimal system uses 10 digits: 0 to 9
• Binary system uses 2 digits: 0 and 1
• Hexadecimal system uses 16 digits: 0 to 9, and A to F

Binary to Decimal Conversion

• 2^0 = 1, 2^1 = 2, 2^2 = 4, 2^3 = 8, ...
• Convert binary to decimal by multiplying each binary digit by its corresponding power of 2

Hexadecimal System

• Abbreviated as "0x" (e.g. hex 5D might be written as "0x5D")
• Used to represent binary numbers in a more readable form

IP Addresses

• 32-bit binary numbers used to identify computers on the Internet
• Consist of a network part and a host part
• Represented in dotted-decimal notation (e.g. 192.168.1.1)

Subnet Masks

• A 32-bit number that identifies how many bits of the IP address are used to identify the network
• Used to determine the network address of a computer
• Example: 255.240.0.0

Web Browsers and Plug-ins

• Web browsers act on behalf of a user to request and display information
• Plug-ins are used to display special file types that standard web browsers cannot display (e.g. Flash, QuickTime)

Binary Presentation of Data

• Computers use electronic switches that are either on or off, corresponding to 1 or 0
• Binary numbers use the principle of place value, just like decimal numbers

ASCII Code

• American Standard Code for Information Interchange
• Used to represent alpha-numeric data in a computer

Bits and Bytes

• Bits are binary digits (0s and 1s)
• Represented by on/off switches or electrical charges, light pulses, or radio waves in a computer