Computer system architecture

From using a Williams tube as a memory module, to multi-layered PCBs with millions of transistors on them it’s clear that technology does not stand still
From tubes to transistors
(banana for scale)

Apart from a usual ‘computer’ that comes to mind first, there are so-called embedded computer that can hide in any of your home appliances or other things
Applications of a Computer

PC architecture
Input

Input

Additional devices
Graphics

Additional devices
Graphics cards
Network adapters
USB and SATA extensions via PCI-Express
Other task-specific extensions