binary and denary

• Denary is a number system made up of 10 digits (0-9)

  • referred to as a Base-10 number system
  • Each digit has a weight factor of 10 raised to a power, the rightmost digit is 1s (10 ), the next digit to the left 10s (10 ) and so on
  • Humans use the denary system for counting, measuring and performing maths calculations

  
• • Binary is a number system that is made up of two digits (1 and 0)
  • Binary is referred to as a Base-2 number system
  • Each digit has a weight factor of 2 raised to a power, the rightmost digit s 1s (2 ), the next digit to the left 2s (2 ) and so on
  • numbers: 128 (2^7), 64, 32, 16, 8, 4, 2, 1

  
• Why do computers use binary?

  • The CPU is made up of billions of tiny transistors, transistors can only be in a state of on or off
  • Computers use binary numbers to represent data (1 = on, 0 = off)
• binary to denary

  A) 0

  
• denary to binary

  A) subtracted

  
• 2^7 highest denary number is 255