Definition of computer networks, objectives and applications. Computer network types (LANs, MANs and WANs). Computer network architecture: layering protocols & standard models. The OSI & TCP/IP reference models. Physical layer of computer network: signal types, signal characteristics and impairments. Data Transmission Basics: Synchronous and asynchronous transmission, synchronization levels; bit, character and frame. Transmission modes (simplex, half -duplex, full-duplex) and   (parallel & serial transmission), Digital transmission: line and block coding techniques.

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Course Description:
 A knowledge of the basic of orthodontics is essential for the dental student. This course provides the undergraduate student with the background of the normal occlusion, malocclusion, growth and development of dento-facial stuctures, aetiology and diagnosis of malocclusion and the treatment of occlusal discrepancies. The course is an introductory course and consists of lectures and practical parts. The course is conducted through the whole academic year in two semesters.
Credit hour: 4 hours
First and Second Semester consist of two parts:

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