Inside a computer

• CPU


  The main component of a computer that retrieves, deciphers, and executes instructions, performs arithmetic and logical operations, and controls data transfer.
• RAM vs ROM


  RAM: Volatile memory for storing data being used or processed, loses data when powered off. ROM: Non-volatile memory for storing permanent data, retains data when powered off.
• What does RAM stand for?


  RANDOM ACCESS MEMORY
• What type of memory is volatile?


  RAM (Random Access Memory)
• What type of memory is non-volatile?


  ROM (Read-Only Memory)
• Motherboard


  The main circuit board of a computer that connects and supports all hardware components, allowing them to communicate with each other and with the operating system.
• Too much RAM usage


  If a computer runs low on available RAM, applications may run slowly, shut down, or use virtual memory, which can lead to slowdowns and reduced performance.
• Virtual Memory


  A portion of the hard drive used as an extension of RAM when physical RAM is fully utilised. Pages of memory are written to disk and loaded back into RAM as needed.
• Hard Drive


  A non-volatile storage device that uses magnetic disks and mechanical heads to store and retrieve data. HDDs are relatively slow, but available with a wide range of capacities.
• Software vs Hardware


  Software refers to the intangible programs and operating systems that run on a computer, while hardware refers to the physical components that make up the computer system.
• Output Devices


  Electronic devices that produce sound, images, or printed output from a computer system, allowing users to perceive and interact with processed data.
• Input Devices

  Electronic devices that allow users to input data, commands, and instructions into a computer system, enabling human-computer interaction.
• PPI (Pixels Per Inch)


  A measure of display density and sharpness, calculated by dividing pixels by the diagonal length in inches, affecting image quality and sharpness.
• The RAM (Random Access Memory) stores data temporarily while the processor uses it
• The CPU (Central Processing Unit) is the brain of the computer, it carries out all the calculations