q2 comsci

• What format is computer information represented in?

  Digital binary format
• How do computers store information?

  Using binary format with 1s and 0s
• What does "bit" stand for?

  Binary digit
• What is the smallest data unit a computer can interpret?

  Bit
• How many values can a bit hold?

  Two values: 1 or 0
• What is binary code used for?

  To represent letters, numbers, and symbols
• What does ASCII stand for?

  American Standard Code for Information Interchange
• What is the binary representation of the letter A?

  `01000001`
• What is the binary representation of the number 9?

  `00001001`
• What is the binary representation of the symbol #?

  `00100011`
• What is a byte?

  A group of eight bits
• What types of digital information can a byte represent?

  Text, images, audio, and video
• What are the bases and digits of the binary and decimal systems?

  • Binary System:
  • Base: 2
  • Digits: 0 and 1 only
  • Decimal System:
  • Base: 10
  • Digits: 0 through 9
• How does each position in binary and decimal systems represent values?

  • Binary:
  • Each position represents a power of 2: 1, 2, 4, 8, 16, etc.
  • Decimal:
  • Each position represents a power of 10: 10, 100, 1000, etc.
• What are the steps to convert binary to decimal?

  1. Write down the binary number and label each bit position from right to left, starting with 0.
  2. Multiply each bit by $2^{position}$:

  • If the bit is 1, include the value in your sum.
• How does the binary system differ from the decimal system in terms of base and digits?

  Binary uses base 2; decimal uses base 10
• base or radix - specifies how many digits can be used in each place count