Posts

Showing posts from June 16, 2010

Interfacing of LED with 8051 Microcontroller

Image
LED INTERFACING 4.1 Introduction When you need to add light to a model, an ordinary filament lamp is the first thing that springs to mind. But if you don’t need a high light output, or you need light as an indicator, an LED has many advantages over a lamp. LEDS are basically the single light display that include incandescent and are treated as single binary points to be switched on and off by programmer instructions. The individual light display is easy to use. A port presents a bit or a character and then strobe the device. 4.2 ADVANTAGES OF LEDs 4.2.1 Shapes and Sizes : LEDs are available in many shapes and sizes, some of which are shown in the selection below. The 'standard' LED shape is the 5mm diameter domed type, and the smaller 3mm domed type is also popular. 1. Tri-LED array 2. 10 segment bar displays 3. Domed LED sizes 3, 5, 8, 10mm 4. Panel mounting LED 5. PCB mounting LED  6. 26mm red & green LED cluster 4.2.2 Colors : LEDs have traditionally been red, oran

Micro controller (8051) Development board

Image
3.1. INTRODUCTION The trainer kit is a microcontroller based embedded system through which students can understand different types of interfacings such as LEDs, 7-segment,switches,relays,buzzers, keyboard, ADC, DAC, Sensors, EEPROM, RTC, LCD, 8255 etc. using these kit one can easily understands the hardware and software details of above mentioned devices. We have use all fundamental devices, knowledge of them enable the user to easily switch on to other complex and advance technology. Our project also includes some industrial applications like ‘Digital Clock’, ‘Temperature Monitoring System’, ‘Communication System’ etc. The simple design of our project can be easily extended into other application such as Access Control system, Digital Function Generator, Temperature monitoring and controlling kit, General purpose sensor kit, Graphical LCD Display etc. 3.2. FEATURES OF TRAINER KIT Following are some feature which makes our Trainer Kit unique. 1 . Simple Design : We have designed our Tr