Data Exchange Transmission

What is Simplex transmission?

A one-way communication method where data flows in only one direction.

Give one example of Simplex transmission.

A keyboard sending data to a computer.

What is Duplex transmission?

A two-way communication method where data flows in both directions simultaneously.

Give one example of Duplex transmission.

Telephone conversation where both parties talk at the same time.

What is Half-Duplex transmission?

A two-way communication method where data flows in both directions but not at the same time.

Give one example of Half-Duplex transmission.

Walkie-talkies where one person speaks at a time.

What is Serial transmission?

Data bits are sent one after another over a single channel, suitable for long distances.

Give one real-world example of Serial transmission.

Data sent from a keyboard to a computer.

What is Parallel transmission?

Multiple data bits are sent simultaneously over multiple channels, faster but limited to short distances.

Give one real-world example of Parallel transmission.

Data sent to a printer from a computer.

Why is Serial transmission better for long distances?

It uses fewer wires and is less prone to interference.

Why is Parallel transmission faster than Serial?

Because multiple bits are transmitted at the same time.

What is the main disadvantage of Serial transmission?

Slower than parallel because bits are sent one at a time.

What is the main disadvantage of Parallel transmission?

Limited to short distances (about 5 meters) due to signal degradation.

What is the main advantage of Simplex transmission?

Simple and cost-effective for one-way communication.

What is the main disadvantage of Simplex transmission?

No feedback or acknowledgment from the receiver.

What is the main advantage of Duplex transmission?

Allows simultaneous two-way communication, improving efficiency.

What is the main disadvantage of Half-Duplex transmission?

Communication is slower because only one side can transmit at a time.

What is the difference between Serial and Parallel transmission?

Serial sends bits one by one; Parallel sends multiple bits at once.

Why do computers use Serial transmission for external devices?

It reduces complexity and cost for long-distance communication.