Organization & Structure of a Computer System.
6. Data Transfer Methods
6.2 Data Transfer Methods
· Serial Transfer: One bit at a time.
· Parallel Transfer: Multiple bits simultaneously.
· Direct Memory Access (DMA): Allows peripherals to transfer data without CPU intervention.
e. I/O Controllers
The structure of a computer is simple, and that can be represented in below diagram −

Logical Organization of a Computer
· Input unit
· Central processing unit
· Output unit
· Memory unit