Computer Systems
- Created by: Cadenza146
- Created on: 26-05-21 09:07
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- Computer Systems
- CPU
- Central Processing Unit
- integrated circuit, referred to as "the brain"
- moves data between memory locations
- carries out fetch execute cycles
- finds sets of instructions and carries them out
- carries out fetch execute cycles
- cpu clock speed is very important, determines how many cycles can be carried out
- measured in cycles per seconds (Hertz or Hz)
- heat sink & fan are essential components
- RAM
- Random access memory
- volatile but fast
- temporary
- used to hold data that is currently in use
- Power Supply
- converts electrical current into voltage, current and frequency
- stores energy incase any interruptions happen
- Storage
- HDD
- magnetic
- cheap
- retains information even when device is powered off because it's stored magnetically
- SSD
- used to be very expensive
- very fast compared to HDDs
- commonly used to store the OS on whereas HDD is used for files and games
- HDD
- Graphics Card
- responsible for rendering images to the monitor
- different to integrated graphics (iGPU)
- graphics pipelines
- OpenGL
- DirectX
- Vulkan
- Motherboard
- allows system components to connect and communicate with eachother via a central circuit
- ROM
- Read-only memory
- permanent, data store is retained even after PC is shut down
- used to store the BIOS
- slow, not volatile (can store data without power)
- interpret everything in binary
- 1s and 0s
- Cache
- located in CPU
- high speed memory used as temporary store for recently processed data
- CPU
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