8051 Pin Diagram

By | 2017-05-27T14:35:10+00:00 May 27th, 2017|8051 Projects, Programming 8051|

VCC - 5V Supply Port 0(p0.0 to p 0.7): It is eight bit bidirectional I/O port. During external memory access, it functions as multiplexed data and law order address bus AD0-AD7. Port 1(P1.0 to P 1.7): It is eight bit bidirectional I/O port, when logic 1 then it works as Input mode. Port 2(P2.0 to P2.7): It is [...]

Machine Gun

By | 2017-05-22T12:47:26+00:00 May 20th, 2017|555 Timer Projects, Articles|

Author - Arpita Kashyap Introduction A machine gun is a fully automatic mounted or a portable firearm   to fire bullets in quick succession from magazine, typically at a rate of 300 to 1800 rounds per minutes. Here the main aim of project to produce the sound just similar to machine gun. When there is triggering it [...]

LED Light Dimmer

By | 2017-05-21T23:08:12+00:00 May 20th, 2017|555 Timer Projects, Articles|

Author - Arpita Kashyap Introduction LED is a light emitting diode or a semiconductor device that emits visible light when an electric current is passes through it. LED bulb is an assembly of components packaged to fit into a common light socket. In most of the cases, light emitting from semiconductor device is monochromatic that [...]

Level Converter MAX232

By | 2017-05-22T12:47:46+00:00 April 19th, 2017|8051 Projects, 8085 Microprocessor, Articles, AVR Microcontroller, AVR Programming, Electronics|

Level converter MAX232 is very essential when we are interfacing the digital hardware (controller) to the computer via serial mode. The computer serial port use RS 232 protocol and controller works on the TTL logic. These two hardware need to synchronize with each other for the proper communications. To solve this problem MAX [...]

8051 LED Interfacing with Delay

By | 2017-05-29T01:36:24+00:00 April 18th, 2017|8051 Projects, Electronics, Programming 8051|

In this tutorial we learn about how the 8051 LED interfacing with delay generation is done . Time delay generation in 8051 architecture is done by the two methods. Using a simple loop logic Using internal timer register Programming Example 1 1.  Write an embedded C program to continuous flashing the LED connected to port 2. Algorithm: [...]

8051 Based DTMF Control AC Appliances

By | 2017-05-27T14:36:02+00:00 April 18th, 2017|8051 Projects, Electronics, Programming 8051|

DTMF  dual tone is multiple frequency tone which is generated by  phone when the key is pressed. This tone can be used at various applications to control the hardware. DTMF based home appliances is the one of the application of them. When the two phones are connected for the call at that time when the [...]

8051 Microcontroller

By | 2017-05-27T18:59:21+00:00 April 13th, 2017|8051 Projects, Electronics, Programming 8051|

Introduction 8051 has internally Harvard architecture developed by Intel in 1970s for use in embedded systems. It has basic features of microprocessors with internal ROM, RAM, input output ports inbuilt on a single chip. Microcontroller is a device in which entire computer manufactured on a single chip. Microcontroller has 3 basic sizes: Standard, short, extended [...]

How Does a Transistor Work

By | 2017-05-27T14:36:15+00:00 February 25th, 2017|Articles, Electronics|

The Bipolar Junction Transistor The transistor was invented by John Bardeen and W.H. Brattain in 1948. A transistor often called as Bipolar Junction Transistor (BJT) conducts due to both electrons and holes. BJT have two junctions and three terminals. There are two types of transistor: 1. N-P-N Transistor 2. P-N-P Transistor A transistor consist of [...]

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