👉 One computing refers to the fundamental concept of performing computations using a single unit of processing, typically a CPU (Central Processing Unit), which executes instructions from software or hardware to manipulate data and execute tasks. This single-unit approach is the basis of classical computing, where all operations—from arithmetic and logical functions to data storage and retrieval—are carried out sequentially by one central processor. In essence, one computing encapsulates the idea of a single computational entity that orchestrates and processes information according to programmed instructions, forming the backbone of modern computing systems.