Source: samek-embedded

Computer architectures

or more specifically: instruction set architectures (ISA)

Reduced Instruction Set Computer (RISC) architecture

• Memory can only be read and stored by using special load/store instructions (LDR.N, STR.N)
• All data manipulations occur in the registers
• e.g. ARM

Complex Instruction Set Computer (RISC) architecture

• Operands of the current instruction may be stored in memory
• e.g. x86