PC To PC Optical Communication
#1

Abstract:
The project PC to PC fiber optic communication deals with data transfer from one computer to another. It uses C programming and the serial ports of the PCs. The ports are programmed in C. We use MAX 232 to convert RS 232 logic to TTL logic and then an optical transmitter circuit to transmit data via fiber optic cable. The optical transmitter circuit has a LED which is matched as far the cable and MAX 232 is concerned. At the receiver we have an optical receiver circuit which receives data using a photo transistor and a MAX 232 again to convert TTL logic to RS 232 for the serial port at the receiving end computer. The desired baud rate can be set using the program. For transmitting data the program is executed once and whatever is present at the serial port is sent to the other Computer via the fiber optic cable. At the receiver the program is executed to receive data on the serial port.
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#2
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INTRODUCTION
DEFINITION

The project PC to PC fiber optic communication deals with data transfer from one computer to another. It uses C programming and the serial ports of the PCs. The ports are programmed in C. We use MAX 232 to convert RS 232 logic to TTL logic and then an optical transmitter circuit to transmit data via fiber optic cable. The optical transmitter circuit has a LED which is matched as far the cable and MAX 232 is concerned. At the receiver we have an optical receiver circuit which receives data using a photo transistor and a MAX 232 again to convert TTL logic to RS 232 for the serial port at the receiving end computer. The desired baud rate can be set using the program. For transmitting data the program is executed once and whatever is present at the serial port is sent to the other
Computer via the fiber optic cable. At the receiver the program is executed to receive data on the serial port.
NEED
Data transfer is the need of the hour. Surely people can use internet for this. But presently it would be time consuming. One can implement data transfer using wireless medium. But then it will be a costly affair. The need, therefore, is felt for fiber optic communication which is cheaper and more suitable for the task. It is cheaper than wireless medium and is prone to lesser loss as compared to wireless medium. Fiber optics has their own advantages; larger bandwidth, high speeds, only to name a few. Therefore, we need to use optic fibers for the internet and LANs.
SCOPE
In the very beginning we have tried to send ASCII characters between two computers. But as we proceeded further we realized that this project can help transfer files at desired speed between two PCs. If we expand the idea a bit further, a network of PCs can be connected, like in the cable net available today. The Conventional LAN cables can be replaced by fiber optic cables which can provide much higher speeds and also larger information carrying capacity.
BLOCK DIAGRAM OF PROJECT:
COMPONENTS REQUIRED:
1. Voltage Regulator 7805
2. Diode IN4007
3. MAX 232 Level Converter IC
4. DB9 Connectors
5. Capacitors 1uf
6. optical fiber cable
7. IR leds
8. Photo diode
Description of Microcontroller:
89s52: The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel's AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. The AT89S52 provides the following standard features: 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM con-tents but freezes the oscillator, disabling all other chip functions until the next interrupt
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#3
to get information about the topic "pc to pc fibre optic communication " full report ppt and related topic refer the page link bellow

http://studentbank.in/report-pc-to-pc-op...munication

http://studentbank.in/report-communicati...e=threaded

http://studentbank.in/report-communicati...iber-cable
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