Chapter 1 - Data Communication Simulation

Chapter 1 - Data Communication Simulator

Interactive Learning Module

Basics of Data Communication

Data communication requires a Sender, a Receiver, a Medium, and a Message. Good communication must exhibit Delivery, Accuracy, Timeliness, and low Jitter.

Sender

Transmission Medium

Receiver

Status: Waiting...

Signals & Modulation Simulator

Convert digital data (1s and 0s) into signals suitable for transmission. Encoding prepares data for digital mediums, while Modulation prepares it for analog mediums.

Input & Settings

Binary Data Signal Type

Time (t) →

Transmission Modes

Transmission mode refers to the direction of data flow between two linked devices.

1. Simplex Mode

One-Way Only

Communication is unidirectional. The sender can only send, and the receiver can only receive (e.g., Keyboard to Monitor).

Keyboard

Monitor

2. Half-Duplex Mode

Two-Way (One at a time)

Each station can transmit and receive, but not simultaneously (e.g., Walkie-Talkies).

Device A

Device B

3. Full-Duplex Mode

Two-Way (Simultaneous)

Both stations can transmit and receive simultaneously using two paths or divided capacity.

Phone A

Phone B

Types of Transmission Media

The physical pathway connecting devices can be either Guided (Wired) or Unguided (Wireless).

Guided (Wired) Media

Signals are confined to a narrow physical pathway.

Twisted Pair Cable

UTP & STP. Used in old telephones and LANs.

Coaxial Cable

Plastic covering, multiple layers. Used in Cable TVs.

Optical Fiber Cable

Uses light reflection. High speed, high capacity.

Unguided (Wireless) Media

Signals broadcasted through air without physical limits.

Radio Waves

Penetrates buildings. Used for AM/FM radio, TV.

Microwaves

Line-of-sight. Used for mobile phones, satellite.

Infrared

Short distance, cannot penetrate obstacles. Remotes.

Knowledge Check

Test your understanding of OMCA 204 Unit 1 based on the study materials.

Computer Networks - Chapter 1 - Data Communication