Listing Program At89S51 Vs At89C51 Software And Other
Listing Program At89S51 Vs At89C51 Trial Controllers For

GND - Ground. Port 0: Port 0 is an 8-bit open drain bidirectional IO port.

Unlike a general-purpose computer, such as a personal computer, an embedded system performs one or a few predefined tasks, usually with very specific requirements.

Since the system is dedicated to specific tasks, design engineers can optimize it, reducing the size and cost of the product.

Embedded systems are often mass-produced, benefiting from economies of scale.

This line of definition continues to blur as devices expand.

Listing Program At89S51 Vs At89C51 Software And Other

In terms of complexity embedded systems can range from very simple with a single microcontroller chip, to very complex with multiple units, peripherals and networks mounted inside a large chassis or enclosure Fig1:Embedded System 7292019 power station monitoring and controlling 256 POWER STATION MONITORING AND CONTROLING 2 B.TECH EEE 1.2 EXAMPLE OF EMBEDED SYSTEM: Handheld computers Household appliances, including microwave ovens, washing machines, television sets, Avionics, such as inertial guidance systems, flight control hardwaresoftware and other integrated systems in aircraft and missiles Cellular telephones and telephone switches Engine controllers and antilock brake controllers for automobiles Home automation products, such as thermostats, air conditioners, sprinklers, and security monitoring systems Handheld calculatorsDVD players and recorders Medical equipment Personal digital assistant Videogame consoles Computer peripherals such as routers and printers.

Listing Program At89S51 Vs At89C51 Trial Controllers For

Industrial controllers for remote machine operation.

POWER STATION MONITORING AND CONTROLING 3 B.TECH EEE CHAPTER 2 2.1 BLOCK DIAGRAM: Fig 2.1:BLOCK DIAGRAM 2.1.1 BLOCK DIAGRAM DISCRIPTION: The block diagram shows the project of power station monitoring and controlling.

Here in this project we use micro controller, PC, RS 232, LEDS, relays and transformers.

Here we consider 3 sub- stations as 3 transformers in the section.

This regulated 5V is generated by first stepping down the 230V to 9V by the step down transformer.

The step downed ac.

Bridge Rectifier.

Now the rectified, filtered D.C.

Voltage Regulator.

This voltage regulator allows us to have a Regulated Voltage which is 5V.

The rectified; filtered and regulated voltage is again filtered for ripples using an electrolytic capacitor 100F.

Now the output from this section is fed to 40th pin of 89c51 microcontroller to supply operating voltage.

The microcontroller 89c51 with Pull up resistors at Port0 and crystal oscillator of 11.0592 MHz crystal in conjunction with couple of capacitors of is placed at 18th 19th pins of 89c51 to make it work (execute) properly.

POWER STATION MONITORING AND CONTROLING 5 B.TECH EEE CHAPTER 3 3.HARDWARE COMPONENTS: 3.1 MICRO CONTROLLER (AT89S51) 3.1.1 INTRODUCTION A Micro controller consists of a powerful CPU tightly coupled with memory, various IO interfaces such as serial port, parallel port timer or counter, interrupt controller, data acquisition interfaces-Analog to Digital converter, Digital to Analog converter, integrated on to a single silicon chip.

If a system is developed with a microprocessor, the designer has to go for external memory such as RAM, ROM, EPROM and peripherals.

But controller is provided all these facilities on a single chip.

Development of a Micro controller reduces PCB size and cost of design.

One of the major differences between a Microprocessor and a Micro controller is that a controller often deals with bits not bytes as in the real world application.

The device is manufactured using Atmels high-density non-volatile 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 non-volatile memory programmer.

By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the AtmelAT89S51 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

BLOCK DIAGRAM: Fig 3.2:BLOCK DIAGRAM OF MICROCONTROLLER 7292019 power station monitoring and controlling 756 POWER STATION MONITORING AND CONTROLING 7 B.TECH EEE 3.1.5 PIN DIAGRAM: Fig 3.3: PIN DIAGRAM OF MICRO CONTROLLER 3.1.6 PIN DESCRIPTION: VCC - Supply voltage.