ITIS 2P91 Chapter Notes - Chapter 1,2: Word Processor, Autonomic Computing, Wearable Computer

• School: Brock University
• Department: Information Technology Information Systems
• Course: ITIS 2P91
• Professor: Susan Sproule

Document Summary

Hardware refers to the physical equipment used for the input, processing, output, and storage activities of a computer system. Central processing unit (cpu) - preforms the actual computation. Step 3: execute instruction (x is added to y -- done through alu) Machine cycle time: combination of instruction time and execution time. The collection of digital currents imprinted on silicon wafers, or chips, each no bigger than the tip of a pencil eraser. Primary storage - random access memory (ram) - (temporary/volatile: registers, random access memory - ram: temporary and volatile, read only memory - rom: permanent and non-volatile, cache memory: high-speed, quicker access than main memory. Moores law - microprocessor complexity would double every two years. Three main types of computers: supercomputers , mainframe computers, and minicomputers. Workstations: originally developed as desktop engineering workstations to provide the high. Microcomputers - also called micros, personal computers, or pcs (notebooks, laptops)