Y8 Computing 💻💽

• CPU


  (Central Processing Unit) The brain of the computer that executes instructions.
• Motherboard


  The main circuit board that connects all hardware components.
• Memory (RAM)


  Temporary storage for data being processed.
• Hardware


  Physical components of the computer.
• Software


  Programs that run on the computer.
• Keyboard


  Input device for typing commands.
• Mouse


  Input device for interacting with the screen.
• Binary System


  Uses only two digits, 0 and 1, to represent information.
• Pixel


  Smallest unit of an image.
• Pixel Image


  A collection of pixels that form a visual representation.
• Sequence


  A list of instructions to be executed in order.
• Iteration


  Repeating a sequence of instructions until a condition is met.
• Selection


  Choosing a specific path based on conditions.
• Loop


  A sequence of instructions repeated until a condition is met.
• Binary Code


  Coding using only 0s and 1s.
• AND Gate: A logic gate that accepts two inputs and produces a single output.

  
• OR Gate: A logic gate that performs the logical operation of OR.

  
• NOT Gate: A gate that inverts the value of the signal

  
• Bit A binary digit, 1 or 0

  Nibble 4 bits

  Byte 8 bits

  kilobyte (kB) 1024 bytes

  megabyte (MB) 1024 kB

  gigabyte (GB) 1024 MB

  terabyte (TB) 1024 GB
• There are 8 bits in a byte

  There are 2 nibbles in a byte

  There are 1024 bytes in a KB

  There are 1024 KB in a MB

  There are 1048576 KB in a GB (1024X1024)
• String: A sequence of characters, numbers, or symbols that can be used to represent a sequence of characters, numbers, or symbols.
• Integer: A whole number that can be represented by a single digit.
• Real: A number that can be a decimal.
• Boolean: Can be one of two values, True or False.
• What is memory in a computer?


  Stores information, such as data and programs, for immediate use in the computer.
• Symbols in Python:

  
• Why do computers use binary?

  Binary is easier for computers to process, and it also takes up less space.