Analog and Digital Devices Quiz

Digital Systems

• Analog devices: two examples include analog watches and analog phones
• ADC stands for Analog-to-Digital Converter

Input Devices

• Four input devices: keyboard, mouse, scanner, and microphone

Binary System

• The value of each finger on the right hand in binary is:
  • Thumb: 2^4 = 16
  • Index finger: 2^3 = 8
  • Middle finger: 2^2 = 4
  • Ring finger: 2^1 = 2
  • Pinky finger: 2^0 = 1

Binary and Decimal Conversions

• Binary-to-decimal conversions:
  • a) = (Binary value)
  • b) = (Binary value)
  • c) = (Binary value)
• The number of bytes in a 24-bit system is: 24 bits = 3 bytes
• The number of GB in a 2000 MB system is: 2000 MB = 2 GB
• The number of kB in a 5 MB system is: 5 MB = 5000 kB
• The number of MB in a 2.5 GB system is: 2.5 GB = 2500 MB

DAC

• DAC stands for Digital-to-Analog Converter

Output Devices

• Four output devices: monitor, printer, speaker, and projector

Unit Conversions

• Unit conversions:
  • 1 kilobyte (kB) = 1024 bytes (B)
  • 1 megabyte (MB) = 1024 kilobytes (kB)
  • 1 gigabyte (GB) = 1024 megabytes (MB)
  • 1 terabyte (TB) = 1024 gigabytes (GB)

ASCII Encoding

• The ASCII table is used to decode binary text into readable characters
• The decoded text is: (Answer)
• The answer written in bytes using the ASCII binary table is: (Binary Bytes)
• The original message contains 21 bytes and 168 bits