COMPUTER COMMUNICATION NETWORKS

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Introduction: Uses of Computer Networks: Business Applications,
Home Applications, Mobile Users. Network Hardware: Local Area
Networks, Metropolitan Area Networks, Wide Area Networks, Wireless

Networks. Network Software: Protocol Hierarchies, Design Issues for
the Layers, Connection-Oriented and Connectionless Services, Service
Primitives, Data rate limits and network performance.


Data Link Layer: Framing, Error Control, Flow Control, Error-
Detecting Codes.
Data Link Protocols: Simplest Protocol, Stop-and-Wait Protocol, Stopand-
Wait ARQ, Go-Back-N ARQ, Selective Repeat ARQ, HDLC.


Introduction to RTOS: Tasks - states - Data - Semaphores and shared
data - operating systems services - Massage Queues - Mail Boxes –
Timers – Events - Memory Management – Interrupts.
Basic design using RTOS - Overview Encapsulating Semaphores &
Queues, Hard real time Scheduling, Saving memory , Power.


INTRODUCTION TO THYRISTORS: Principle of operation states
anode-cathode characteristics, Two transistor model. Turn-on Methods,
Dynamic Turn-on and turn-off characteristics, Gate characteristics, Gate
trigger circuits, di / dt and dv / dt protection, Thyristor firing circuits.


AC VOLTAGE CONTROLLERS: Introduction, Principles of on and
off control, Principles of phase control, Single phase controllers with
restive loads and Inductive loads, numerical problems.