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Light activated switch circuit using LDR and IC 555

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Light activated switch circuit
Light activating and deactivating switches are simple to build when you are provided with a LDR (sensing element) and 555 (switch activator). These kind of sensor circuits are widely employed in many applications and may come in handy when you intend to build a simple light sensing circuit. LED is used in the above circuit to indicate switching, you can use device of your desire provided ample amount of power supply.

Animated Scrolling Text in 16x2 LCD using 8051 Microcontroller

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Scrolling text animation in 16x2 LCD
LCD's are widely used where user interaction with the system is necessary and you might have come across static message display using LCD. The message displayed on the LCD can also be animated like blinking, scrolling etc. This article explains how to display a running or scrolling text in a 16 x 2 LCD display with a 8051 Microcontroller. 

Atmega16 Digital Thermometer using LM35 and 16x2 LCD

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Digital Thermometer using Atmega16
Thermometers are the device we use to measure the temperature in any desired scale and we all will be quite familiar with the analog thermometers. There are some disadvantages in analog thermometers and this can be overcome by using a digital thermometer. The above embedded system shows the design and implementation of a simple Digital Thermometer using Atmega16 (AVR),  LM35 & 16x2 LCD.

Interrupt Service Routine using Timers in 8051 Microcontroller

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Interrupt service routine using Timers in 8051
Interrupts are one of the most important concepts in a 8051 Microcontroller and we can say that no real world Embedded System exists without using the concept of Interrupts. Interrupt is nothing but a notification or request signal that was received by the controller from device hardware, software or from other external sources. On receiving the Interrupt the Microcontroller completes the execution of current instruction and starts executing a ISR (Interrupt service Routine).