ITM 102 Chapter Notes - Chapter 2: Local Area Network, Hertz, Wide Area Network

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 102
• Professor: Ross Mc Naughton

Document Summary

Obtain, organize, analyze, and store data and information. Consistently repeating the above actions many times retrieving, displaying, and sending information. These three basic categories together create a platform. Directs the execution of instructions and the transformation of data using tran- sistors (an electric switch that can be either on or off) A tiny chip made up of transistors is called a microprocessor. This chip contains most of the components that make up the central processing unit (cpu) Computer speed is called the clock speed and is measure in megahertz (mhz), millions of cycles per second and gigahertz (ghz), billions of cycles per second. Computer hierarchy categorizes processors according to their power. Embedded processors are programmable chips built into products to make them smart eg. dsps. Memory temporarily locates data and instructions before processing. Long-term memory helps you keep track of facts. Short-term memory is only for items that you need to remember for a relatively short time.