Data Storage Units and Conversion Quiz

Data Storage Units

• Bit: The smallest unit of data, represented by 0 or 1
• Nibble: 4 bits
• Byte: 8 bits
• Kilobyte (KB): 1024 bytes
• Megabyte (MB): 1024 KB
• Gigabyte (GB): 1024 MB
• Terabyte (TB): 1024 GB
• Petabyte (PB): 1024 TB

Converting Denary to Binary

• Divide by 2 Method:

  • Repeatedly divide the denary number by 2, keeping track of the remainders.
  • The remainders, read from bottom to top, form the binary equivalent.

• Example: To convert 89 to binary:

  • 89 / 2 = 44 remainder 1
  • 44 / 2 = 22 remainder 0
  • 22 / 2 = 11 remainder 0
  • 11 / 2 = 5 remainder 1
  • 5 / 2 = 2 remainder 1
  • 2 / 2 = 1 remainder 0
  • 1 / 2 = 0 remainder 1
  • Binary equivalent is 01011001

• Binary to Denary Conversion (Line Method):

  • Assign a value (128, 64, 32, 16, 8, 4, 2, 1) to each bit position, moving from left to right.
  • Add the values of the positions where a bit is 1.
  • Example: 01011001 (binary number):
    • 64 + 16 + 8 + 1 = 89 (denary number)