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Internal Components of a Computer System - Coggle Diagram
Internal Components of a Computer System
I/O Devices
Input Devices
Enter data and instructions into a computer system
Keyboard
Games Controller
Mouse
Graphics Tablet
Buttons
Camera
Sensors
Output Devices
Display the results of processing from a computer system
Headphones
Speakers
Monitor
Projector
3D/2D Printer
Braille
CPU
Factors that Affect Performance
Number of Cores
Cache Size
Clock Speed (Measured Ghz)
Arithmetic Logic Unit (ALU)
Performs mathematical opperations
Control Unit
Fetching, decoding and executing instructions.
Memory Address Register
Memory Data Register
Memory
Read Only Memory (ROM)
Non-Volatile
Boot-up Instructions (BIOS)
Typically not upgraded
Small capacity
Random Access Memory (RAM)
Volatile
Apps/Programs but also data
Easily upgradable
Much larger capacity than ROM
Secondary Storage
Magnetic
Magnetic Tape
Floppy Disk
Hard Disk Drive
Solid State
SD Cards
USB Memory Stick
SSD
Optical
CD RW
BluRay
DVD
Buses
Data Bus (bi-directional) - Carries the instructions from main memory to the CPU
Control Bus (uni-directional) - Carries control signals from different devices (e.g. mouse) to the CPU
Address (uni-directional) - Carries address to main memory from the CPU