8051 Projects

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Intel 8255A – Programmable Peripheral Interface

By |2019-02-23T23:56:20+00:00February 23rd, 2019|8051 Projects, 8085 Microprocessor|

The Intel 8255 (or i8255/onkyo tx 8255) Programmable Peripheral Interface (PPI) chip was developed and manufactured by Intel for the Intel 8080 microprocessor in the early 1970's. The 8255A is a programmable universal I / O device that allows the transfer of I / O data to an I / O interrupt when needed. It [...]

8051 Microcontroller Timers and Counters

By |2018-12-17T00:14:30+00:00December 17th, 2018|8051 Projects|

A timer is a special clock that is used to measure time intervals. It is a device that counts down from a certain time interval and is used to generate a delay. The timer can be used on an internal clock or from an external source. A meter is a device that stores (and sometimes [...]

By |2018-12-15T17:15:04+00:00December 15th, 2018|8051 Projects|

Description In this tutorial we understand how to interfacing l293d with 8051 micro controller. The l293d is motor driver IC which drive the DC gear motor through the 8051 micro controller. The interfacing of L293D can be understand with the help of any application, so here we understand with the help of motor driver program. Program to [...]

Interfacing of Seven Segment Display with 8051

By |2018-12-25T23:18:48+00:00December 15th, 2018|8051 Projects|

Introduction In this tutorial we will learn about the interfacing of seven segment display with 8051 controller. Before interfacing the seven segment we must be know about the types of seven segment and their controlling logic.As we know 7 segment are two types common anode and common cathode. In common cathode LED is glow by positive [...]

8051 Pin Diagram

By |2018-12-14T22:27:33+00:00May 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 [...]

Level Converter MAX232

By |2017-05-22T12:47:46+00:00April 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+00:00April 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+00:00April 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+00:00April 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 [...]

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