EC6703 ERTS Important Questions, Embedded & Real Time Systems Answer Key – CSE 7th SEM Anna University


EC6703 ERTS Important Questions

Anna University Regulation 2013 CSE EC6703 ERTS Important Questions for all 5 units are provided below. Download link for CSE 7th SEM EC6703 Embedded & Real Time Systems Answer Key is listed down for students to make perfect utilization and score maximum marks with our study materials.



1. Differentiate synchronous communication and iso-synchronous communication.

Synchronous communication

When a byte or a frame of the data is received or transmitted at constant time intervals with uniform phase difference, the communication is called synchronous communication.

Iso-synchronous communication

Iso-synchronous communication is a special case when the maximum time interval can be varied.

2. What are the two characteristics of synchronous communication?

Bytes maintain a constant phase difference The clock is not always implicit to the synchronous data receiver.

3. What are the three ways of communication for a device?

• Iso-synchronous communication

• Synchronous communication

• Asynchronous communication

4. Expand a) SPI b) SCI

SPI—serial Peripheral Interface

SCI—Serial Communication Interface

5. Define software timer.

This is software that executes and increases or decreases a count variable on an interrupt from a timer output or form a real time clock interrupt. A software timer can also generate interrupt on overflow of count value or on finishing value of the count variable.

6. What is I2C?

I2C is a serial bus for interconnecting ICs .It has a start bit and a stop bit like an UART. It has seven fields for start,7 bit address, defining a read or a write, defining byte as acknowledging byte, data byte, NACK and end.

7. What are the bits in I2C corresponding to?

It has seven fields for start,7 bit address, defining a read or a write, defining byte as acknowledging byte, data byte, NACK and end

8. What is a CAN bus?

Where is it used? CAN is a serial bus for interconnecting a central Control network. It is mostly used in automobiles. It has fields for bus arbitration bits, control bits for address and data length data bits, CRC check bits, acknowledgement bits and ending bits.

9. What is USB? Where is it used?

USB is a serial bus for interconnecting a system. It attaches and detaches a device from the network. It uses a root hub. Nodes containing the devices can be organized like a tree structure. It is mostly used in networking the IO devices like scanner in a computer system.

10. What are the features of the USB protocol?

A device can be attached, configured and used, reset, reconfigured and used, share the bandwidth with other devices, detached and reattached.

11. Explain briefly about PCI and PCI/X buses.

PCI and PCI/X buses are independent from the IBM architecture .PCI/X is an extension of PCI and support 64/100 MHZ transfers. Lately, new versions have been introduced for the PCI bus architecture.

12. Why are SPCI parallel buses important?

SPCI serial buses are important for distributed devices. The latest high speed sophisticated systems use new sophisticated buses.

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EC6703 Embedded & Real Time Systems Answer Key free download

Anna University CSE ERTS Important Questions Regulation 2013

EC6703 Answer Key, ERTS Unit wise Important Questions- CSE 7th Semester


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