MGMT 104 Lecture Notes - Lecture 3: Central Processing Unit, Computer Data Storage, Control Unit
5 Feb 2017
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Arithmetic/logic unit (alu): performs mathematical calculations and makes logical comparisons. Control unit: sequentially accesses program instructions, decodes them, and coordinates the flow of data in and out of the alu, registers, primary storage, and even secondary storage and various output devices. Registers: high-speed storage areas used to temporarily hold small units of program instructions and data. Primary storage: also called main memory and is closely associated with the cpu. Processing and memory devices: power, speed, and capacity. System unit: houses the components responsible for processing (the cpu and memory) Linked either directly or indirectly into the system unit housing. Clock speed: series of electronic pulses produced at a predetermined rate that affects machine cycle time. Measured in: gigahertz (ghz): billions of cycles per second. Collections of digital circuits imprinted on silicon wafers, or chips, each no bigger than the tip of a pencil eraser. Moore"s law: hypothesis stating that transistor densities on a single chip will double every two years.
