Computer Architecture Basics
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Questions and Answers

What is the CPU's primary responsibility?

  • To fetch instructions from memory and execute them (correct)
  • To act as a buffer to prevent the CPU from being overwhelmed by distractions
  • To detect motion and distance of the mouse
  • To compile programs written in human-readable languages

    • What is the primary function of the I/O subsystem?

  • To compile programs written in human-readable languages
  • To act as a buffer to prevent the CPU from being overwhelmed by distractions (correct)
  • To detect motion and distance of the mouse
  • To execute instructions from memory

    • What happens when the I/O subsystem decides that a mouse click is important?

  • It generates an interrupt to the CPU (correct)
  • It requests instructions from the memory subsystem
  • It sends a message to the monitor with information about its position
  • It compiles the mouse program and stores it in memory

    • How does the CPU handle multitasking?

    <p>By executing billions of instructions per second</p> Signup and view all the answers

    What is the role of the mouse in the computer system?

    <p>To capture user intentions and make them real</p> Signup and view all the answers

    What happens when the CPU receives a mouse click?

    <p>It looks up the address for the mouse program and executes its instructions</p> Signup and view all the answers

    What is the purpose of programs in the computer system?

    <p>To perform tasks for the CPU</p> Signup and view all the answers

    What is the format of programs stored in memory?

    <p>Bits of ones and zeros</p> Signup and view all the answers

    What is the role of the CPU in processing a mouse click?

    <p>To execute instructions from multiple programs</p> Signup and view all the answers

    What is the purpose of the I/O subsystem in relation to the CPU?

    <p>To act as a buffer to prevent the CPU from being overwhelmed by distractions</p> Signup and view all the answers

    Study Notes

    Computer Architecture

    • A computer is more than just a monitor and keyboard, it has internal components that capture user intentions and make them real.

    The Mouse

    • A mouse is a simple machine with buttons and a system for detecting motion and distance.
    • It can use optical or mechanical (rubber ball and plastic wheels) systems for measurement.
    • When a mouse button is clicked, it sends a message to the computer with information about its position.

    Input/Output Subsystem

    • The basic input/output subsystem acts as the eyes, ears, mouth, and hands of the computer, allowing it to interact with its environment.
    • It acts as a buffer to prevent the CPU from being overwhelmed by distractions.

    CPU and Interrupts

    • The CPU (Central Processing Unit) is the brain of the computer, responsible for fetching instructions from memory and executing them.
    • When the I/O subsystem decides that a mouse click is important, it generates an interrupt to the CPU.
    • The CPU's job is to fetch and execute instructions from memory, and it can multitask by executing billions of instructions per second.

    Programs and Memory

    • There are programs for every task the CPU performs, written by humans in human-readable programming languages like Java, C++, or Python.
    • Programs are compiled and made smaller, then stored in bits of ones and zeros in memory.
    • The CPU looks up the address for the required program and sends a request to the memory subsystem for instructions.

    Mouse Click Processing

    • When the CPU receives a mouse click, it looks up the address for the mouse program and executes its instructions.
    • The CPU may need to request instructions from other programs, such as the monitor program, to determine the action associated with the mouse click.
    • The CPU fetches and executes instructions from multiple programs to complete the task, involving peripherals, the I/O subsystem, the CPU, programs, and memory.

    Computer Architecture

    • A computer consists of internal components that capture user intentions and execute them.

    The Mouse

    • A mouse is a simple machine with buttons and a motion detection system, which can be optical or mechanical.
    • The mouse sends a message to the computer with its position information when a button is clicked.

    Input/Output Subsystem

    • The input/output subsystem acts as the interface between the computer and its environment, enabling interaction.
    • It buffers the CPU from distractions, allowing it to focus on processing instructions.

    CPU and Interrupts

    • The CPU is the brain of the computer, responsible for fetching and executing instructions from memory.
    • The CPU multitasks by executing billions of instructions per second.
    • When the I/O subsystem detects an important event, such as a mouse click, it generates an interrupt to the CPU.

    Programs and Memory

    • Programs are written in human-readable languages like Java, C++, or Python and are compiled into smaller, machine-readable code.
    • Programs are stored in memory as bits of ones and zeros.
    • The CPU looks up the address for the required program and requests instructions from the memory subsystem.

    Mouse Click Processing

    • The CPU receives a mouse click interrupt, looks up the mouse program's address, and executes its instructions.
    • The CPU may need to request instructions from other programs, such as the monitor program, to determine the action associated with the mouse click.
    • The CPU fetches and executes instructions from multiple programs to complete the task, involving peripherals, the I/O subsystem, the CPU, programs, and memory.

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    Description

    Learn about the internal components of a computer and how they work together, including input devices like the mouse and the input/output subsystem.

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