Multiple Instruction Multiple Data
IR [ Instruction Register ]
BCD [ Binary Coded Decimal ]
Microservices, Message bus, Service requester/ consumer, MVC, MVVM, Microkernel, N-tier, Domain-driven design, Presentation-abstraction-control
Presentation layer (PL), Data service layer (DSL), Business logic layer (BLL), Data access layer (DAL).
The hardware, operating system, software, and user layers
Register
RAM
1. System Design, 2. Instruction set architecture (ISA), 3. Microarchitecture
Input Unit, Output Unit, Storage Unit, Arithmetic Logic Unit, Control Unit