interfacing 16x2 lcd display with pic microcontroller brands

In this session we will see how to interface 16×2 LCD to PIC18F4550 microcontroller which is of family PIC18F. You can get information of 16×2 LCD in the session

PIC18F4550 belongs to the PIC18F family; PIC18F4550 is an 8bit microcontroller and uses RISC architecture. PIC18F4550 has 40 pins in PDIP (dual in line package) and 44 pin in TQFP (Quad flat package).

32KB flash memory, 2048 bytes of SRAM (synchronous Random Access memory), EEPROM (Electrically Erasable Program Read Only Memory) of 256 bytes are embedded in the PIC18F4550.

It has 35 I/O pins for interfacing and communication with other peripherals, 13channel of 10bit analog to digital converters which are used for interfacing and communicating the analog peripherals (DC motor, LDR, etc.).

PIC18F4550 has SPI (serial peripheral interface) and i2c (inter integrated circuit) for master and slave modes. It has SPP (Streaming Parallel Port) for USB streaming transfer.

PIC18F4550 is embedded with 4 timer modules (timer0 to timer3), 2 comparator modules and 3 external interrupt. It has Dual Oscillator options allow microcontroller and USB module to run at different clock speeds. It can operate in 2.0V to 5.5V

The resistor R1 is used for giving the contrast to the LCD. The crystal oscillator of 12 MHz is connected to the OSC1 and OSC2 pins of Pic microcontroller PIC18F4550 for system clock. The capacitor C2 and C3 will act filters to the crystal oscillator. You can use different ports or pins for interfacing the LCD before going to different ports please check the data sheet whether the pins for general purpose or they are special function pins.

Interfacing LCD to PIC is not different from interfacing to 8051. The basic concept and gist of the programming is almost same. Visit the following link for more information

Only the pins, registers and architecture using for interfacing will be different. When we look at the program, functions like initialization, sending data to the LCD will be almost same.

In the pic programming also for initializing the LCD the R/W pin should be low for writing the data, Enable pins should be high and register select pin (RS) should be high for writing the data. For sending a command the RS should be low, R/W pin should be low and enable pin should be high.

Install MPLAB in your system and create a new project, in selecting device and family select PIC18F family and add PIC18F4550 controller to your project.

In this project i am going to interface 16×2 lcd display in 4-bit mode with Microchip Pic16f877 microcontroller. We can interface any size of character lcd display (8×1,8×2,10×1,10×2, 16×2,16×2,16×4,20×1,20×2,40×1,40×2 etc) in 4-bit mode with pic microcontrollers. In 4-bit interface mode only 4 lcd data lines are used to display data on lcd screen. Usually lcd is interfaced in 4-bit mode with microcontrollers to save I\O pins of microcontrollers. Before beginning any further i assume that you know difference between 4-bit and 8-bit lcd interfacing mode with microcntrollers. If not just take the below simple tutorial. Tutorial will help you in understating the basic difference, pros and cons of both the modes. It will also help you in understanding the code below easily.

In 4-bit mode only 4-bit data is send to lcd at a time. Since 8-bit microcontrollers contains data in 8-bit form so we divide our data in to two nibbles(1-nibble=4-bits). First higher 4-bits(nibble) is send to lcd and then the lower 4-bits(nibble) with enable stroke signal. Only D4,D5,D6,D7 data pins of 16×2 lcd are used in 4-bit interface mode. D1,D2,D3,D4 are left empty. D4 is our least significant bit and D7 is highest significant bit in 4-bit interface mode. A typical interfacing diagram is given at the right side.

Interfacing 16×2 lcd with Pic16f877 microcontroller is simple, if you have taken the above tutorial. The circuit of the project is also very simple. Port-B first 4 bits (RB0,RB1,RB2,RB3) of Pic16f877 microcontroller are used to send 4-bit data and commands to lcd. These four Pins(RB0,RB1,RB2,RB3) are Connected to four data pins of 16×2 lcd(D4,D5,D6,D7).Port-D pin# 5 is connected to rw(read-write) pin of lcd. Port-D pin# 6 is connected to rs(register select) pin of lcd. Port-D pin# 7 is connected to en(Enable) pin of 16×2 lcd. If you are newbie and have to idea about the working and pin configuration of lcd. Below is a good tutorial.

This function is separating four bits from our command and puts them on RB0,RB1,RB2,RB3 line and then sends them to lcd. The following instructions are separating four bits.

This function is separating four bits from our 8-bit data and puts the 4-bit data on RB0,RB1,RB2,RB3 pins and then sends them to lcd. Following instructions are separating four bits.

In the main function i first called lcdint() function. This function is initializing our lcd. Refer to the data sheet of lcd if you dont know what is lcd initialization. Then i am sending data to 16×2 lcd which i want to display on lcd screen. I am displaying word “Microcontroller” on lcd display screen.

This is our sixth tutorial in our PIC Tutorial Series, in this tutorial we learn Interfacing of 16x2 LCD with PIC Microcontroller. In our previous tutorials we have learnt the basics of PIC using some LED blinking Programs and have also learnt How to use Timers in PIC Microcontroller. You can check here all the tutorials on Learning PIC Microcontrollers using MPLABX and XC8 compiler.

This tutorial will be an interesting one because we will learn How to Interface 16×2 LCD with PIC16F877A, check the detailed Video at the end this tutorial. Gone are the old days where we used LEDs for user indications. Let us see how we can make our projects look more cool and useful by using LCD displays. Also check our previous articles on Interfacing LCD with 8051, with Arduino, with Raspberry Pi, with AVR.

To make things easier we have made a small librarythat could make things easy while using this LCD with our PIC16F877A. The header file "MyLCD.h" is given here for download, which contains all the necessary function to drive the LCD using PIC MCU. Library code is well explained by comment lines but if you still have doubts reach us through the comment section. Also check this article for Basic LCD working and its Pinouts.

Now, there are two ways to add this code into your program. You can either copy all the above lines of code in MyLCD.h and paste them before the void main(). Or you can download the header file using the link and add them to the header file of your project (#include " MyLCD.h ";). This can be done by right clicking on the header file and selecting Add existing Item and browsing to this header file.

Here I have copied and pasted the header file code into my main C file. So if you are using our code, then you don’t need to download and add the header file into your program, just use the complete Code given at the end of this Tutorial. Also note that this library will only support PIC16F series PIC Microcontroller.

void Lcd_Start():This function should be the first function that has to be called to start working with our LCD. We should call this function only once to avoid lag in the program.

void Lcd_Set_Cursor(x pos, y pos):Once started, our LCD is ready to take commands, we can instruct the LCD to set its cursor in you preferred location by using this function.  Suppose if, we need out cursor at 5th character of 1st row. Then the function will be void Lcd_Set_Cursor(1, 5)

Each time the Lcd_Print_Char(char data)is called, its respective character values is sent to the data-lines of the LCD. These characters reach the HD44780U in form of bits. Now this IC relates the bits to the character to be displayed by using its ROM memory as shown the below table. You can find bits for all the characters in the datasheet of HD44780U LCD Controller.

Now, since we are satisfied with our header file let’s build the circuit and test the program. Also check complete header file given in the link given above.

The hardware for this project is very simple. We are going to reuse the same PIC module that we used last time and connect the LCD module to our PIC using jumper wires.

This article is a continuation of the series of tutorials on the PIC16F877A Microcontroller. The aim of this series is to provide easy and practical examples that anyone can understand. In our previous tutorial, we have seen how to use multiple external interrupts in PIC16F877A. In this tutorial, we will learn LCD Interfacing with PIC16F877A.

We always use devices made up of Liquid Crystal Displays (LCDs) like computers, digital watches and also DVD and CD players. They have become very common and have taken a giant leap in the screen industry by clearly replacing the use of Cathode Ray Tubes (CRT). CRT draws more power than LCD and are also bigger and heavier. All of us have seen a LCD, but no one knows the exact working of it. Let us take a look at the working of a LCD.

Here we are using alphanumeric LCD 16×2. A 16×2 LCD display is very basic module and is very commonly used in various devices and circuits. These modules are preferred over seven segments and other multi segment LEDs. The reasons being: LCDs are economical; easily programmable; have no limitation of displaying special & even custom characters (unlike in seven segments), animations and so on.

A 16×2 LCD means it can display 16 characters per line and there are 2 such lines. In this LCD each character is displayed in 5×7 pixel matrix. This LCD has two registers, namely, Command and Data. The command register stores the command instructions given to the LCD. A command is an instruction given to LCD to do a predefined task like initializing it, clearing its screen, setting the cursor position, controlling display etc. The data register stores the data to be displayed on the LCD. The data is the ASCII value of the character to be displayed on the LCD.

The LCD display module requires 3 control lines as well as either 4 or 8 I/O lines for the data bus. The user may select whether the LCD is to operate with a 4-bit data bus or an 8-bit data bus. If a 4-bit data bus is used the LCD will require a total of 7 data lines (3 control lines plus the 4 lines for the data bus). If an 8-bit data bus is used the LCD will require a total of 11 data lines (3 control lines plus the 8 lines for the data bus).

The EN line is called “Enable.” This control line is used to tell the LCD that you are sending it data. To send data to the LCD, your program should make sure this line is low (0) and then set the other two control lines and/or put data on the data bus. When the other lines are completely ready, bring ENhigh (1) and wait for the minimum amount of time required by the LCD datasheet (this varies from LCD to LCD), and end by bringing it low (0) again.

The RS line is the “Register Select” line. When RS is low (0), the data is to be treated as a command or special instruction (such as clear screen, position cursor, etc.). When RS is high (1), the data being sent is text data which should be displayed on the screen. For example, to display the letter “T” on the screen you would set RS high.

The RW line is the “Read/Write” control line. When RW is low (0), the information on the data bus is being written to the LCD. When RW is high (1), the program is effectively querying (or reading) the LCD. Only one instruction (“Get LCD status”) is a read command. All others are write commands–so RW will almost always be low.

We come across Liquid Crystal Display (LCD) displays everywhere around us. Computers, calculators, television sets, mobile phones, and digital watches use some kind of display to display the time.

An LCD screen is an electronic display module that uses liquid crystal to produce a visible image. The 16×2 LCD display is a very basic module commonly used in DIYs and circuits. The 16×2 translates a display of 16 characters per line in 2 such lines. In this LCD, each character is displayed in a 5×7 pixel matrix.

Contrast adjustment; the best way is to use a variable resistor such as a potentiometer. The output of the potentiometer is connected to this pin. Rotate the potentiometer knob forward and backward to adjust the LCD contrast.

A 16X2 LCD has two registers, namely, command and data. The register select is used to switch from one register to other. RS=0 for the command register, whereas RS=1 for the data register.

Command Register: The command register stores the command instructions given to the LCD. A command is an instruction given to an LCD to do a predefined task. Examples like:

Data Register: The data register stores the data to be displayed on the LCD. The data is the ASCII value of the character to be displayed on the LCD. When we send data to LCD, it goes to the data register and is processed there. When RS=1, the data register is selected.

Generating custom characters on LCD is not very hard. It requires knowledge about the custom-generated random access memory (CG-RAM) of the LCD and the LCD chip controller. Most LCDs contain a Hitachi HD4478 controller.

CG-RAM address starts from 0x40 (Hexadecimal) or 64 in decimal. We can generate custom characters at these addresses. Once we generate our characters at these addresses, we can print them by just sending commands to the LCD. Character addresses and printing commands are below.

LCD modules are very important in many Arduino-based embedded system designs to improve the user interface of the system. Interfacing with Arduino gives the programmer more freedom to customize the code easily. Any cost-effective Arduino board, a 16X2 character LCD display, jumper wires, and a breadboard are sufficient enough to build the circuit. The interfacing of Arduino to LCD display is below.

The combination of an LCD and Arduino yields several projects, the most simple one being LCD to display the LED brightness. All we need for this circuit is an LCD, Arduino, breadboard, a resistor, potentiometer, LED, and some jumper cables. The circuit connections are below.

Hello Friends, This is an another project in continuation with understanding basic for interfacing external devices with Raspberry Pi GPIOwe have seen basic details about GPIO pin structure and there use.

LCD’s are generally used as a display in many applications as they are easy to use then seven segment displays. 16*2 LCD are alphanumeric LCD’s which can display alphabets, numbers and some special characters. They are easily operated using commands which are hexadecimal values.

We have already discussed in detail about Basic Working of LCD (Liquid Crystal Display) and LCD 16×2 Pin Diagram in similar projects with Arduino like LCD (Liquid Crystal) Display With Arduino Board and Interfacing LCD with Arduino Proteus. I request you please go through this project to know more about LCD display and to get general Interfacing idea.

LCD stands for Liquid crystal display. 16×2 LCD is named so because; it has 16 Columns and 2 Rows. There are a lot of combinations available like 8×1, 8×2, 10×2, 16×1, etc. but the most used one is the 16×2 LCD. So, it will have 16×2 = 32 characters in total and each character will be made of 5×8 Pixel Dots.

In 16×2 LCD there are 16 pins over all if there is a back light, if there is no back light there will be 14 pins. One can power or leave the back light pins. Now in the 14 pins there are 8 data pins (7-14 or D0-D7), 2 power supply pins (1&2 or VSS&VDD or GND&+5v), 3rd pin for contrast control (VEE-controls how thick the characters should be shown), and 3 control pins (RS&RW&E).

Pin4 (RS/Register Select/Control Pin): This pin toggles among command or data register, used to connect a microcontroller unit pin and obtains either 0 or 1(0 = data mode, and 1 = command mode).

Pin5 (Read/Write(RW)): This pin toggles the display among the read or writes operation, and it is connected to a microcontroller unit pin to get either 0 or 1 (0 = Write Operation, and 1 = Read Operation).

Pin 6 (Enable(E)): This pin should be held high to execute Read/Write process, and it is connected to the microcontroller unit & constantly held high.

Pins 7-14 (Data Pins/D0……D7): These pins are used to send data to the display. These pins are connected in two-wire modes like 4-wire mode and 8-wire mode. In 4-wire mode, only four pins are connected to the microcontroller unit like 0 to 3, whereas in 8-wire mode, 8-pins are connected to microcontroller unit like 0 to 7.

In this example we will use the library from Adafruit. It’s designed for Adafruit LCD boards but will also work with other brands as well. If your display board uses an HD44780 controller, then it should work with no issues at all.

Learn Lcd interfacing with 8051 development Board.8051 Project Kit Support AT89S51, AT89S52, P89V51RD2, etc. 40-Pin DIP Chip. USB asp Programmer can be used for both 8051-AVR IC (2in1) | 16 x 2 LCD Display has Yellow/Green Backlight

If you are learning LCD Interfacing with microcontroller programming and want to make a project based on 8051 microcontrollers then this board will help you. Using 16×2 LCD Interfacing with 8051 Development Board you can develop and prototype with any of 8051(AT89S51, AT89S52, P89V51RD2, AT89Cxx) 40 pin microcontrollers. Because The board has 1.5 Amp bridge rectifiers allow this board to be powered with both AC and DC power supply adapters. The board having an RS232 Serial port for flashing the P89V51RD2 (NXP) microcontroller and also it is used for interfacing GSM module, GPS module, RFID module. Furthermore, there is a 5V, 12V, GND power bus which allows to power external peripherals module.

16×2 LCD Display Support mostly All Digital Microcontrollers such as Arduino, 8051, PIC, AVR, ARM, MSP, COP8, STM, Raspberry Pi, etc. Here it is Provided with onboard Atmel AT89S52 Microcontroller Project Board. So Users can learn 16×2 LCD interfacing with the 8051 Development Board.

First of all 16×2 LCD is a basic 16 character by 2 line display Yellow/Green Backlight. Utilizes the extremely most common HD44780 parallel interface chipset (datasheet). Even more, it has JHD162A Compatible Pin-out Diagram, so the Command Interface code is freely available. Finally, You will need 7 general I/O pins (If used in 4-bit Mode) to interface to this LCD screen. it also includes an LED backlight. Learn How To Interface 8051 Development Board with LCD 16×2 Display using 8051/AVR USB Programmer for Burn/Flash Hex File into Atmel AT89S52 Microcontroller. By 16×2 LCD interfacing with 8051 Development Board, the user can display Alphanumeric characters.

Features of 16×2 Display LCD:Commonly Used in: Student Project, Collage, copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices

USB AVR and AT89Sxx ISP (In-System Programming) Programmer is a low-cost USB-based programmer. Because it is ISP, so there is no need to take out the target microcontroller from the development Board. This programmer will work with a wide variety of Atmel AVR and also AT89Sxxxx microcontroller. This is quite compact, but the design is really elegant. Even more, The USB interface is achieved by using an atmega8 processor, and the rest is done in firmware. After Writing code for 16×2 LCD interfacing with 8051 Development Board, you use this Programmer to Flash Hex File into the Atmel AT89S52 Microcontroller IC

Download Link:(All in 1 RAR file) For How to install driver | Circuit Diagram | Connection | Program 8051 AVR Microcontroller | Driver For    All Windows OS 64-bit & 32-bit

This article is a continuation of the series of tutorials on the PIC16F877A Microcontroller. The aim of this series is to provide easy and practical examples that anyone can understand. In the previous LCD tutorial, we have used that LCD in 8-bit mode. But here we will see LCD 4-bit interfacing with PIC16F877A Microcontroller.

8-bit mode is already working and that looks awesome. Then why we are going to 4-bit mode? This is the question that comes to mind whenever I said 4-bit mode. Yeah, that 8-bit mode is nice. But but but… Just assume. I’m doing one project which requires more number of hardware. But PIC16F877A has only 33 GPIOs. So in that time I can use this 4-bit mode and reduce the pin required for the LCD module. Am I right? Great. That’s why 4-bit mode also important. Already we know the LED’s operation. If we want to enable 4-bit mode we have to do small modifications in the normal method. Let’s see that.

Here everything is the same except the way of data writing. Here we have only 4 bits. So we need to send nibble by nibble. So first we need to send first nibble then followed by the second. See that code. I’m writing into Port B’s last 4 bits. Because the last 4 bits are connected to LCD.

Using the serial enabled controller, it is easy to connect to any microcontroller that has a serial UART port such as an Arduino, AVR, PIC, etc. The SerLCD supports 16 and 20 character-wide screens with 2 or 4 lines of display.

Depending on your LCD"s specs, the input voltage may be 3.3V or 5V. For the LCDs listed below, the input voltage for the backpack must be 3.3V even though the silkscreen says 5V. The logic levels will be the same as the input voltage.

The LCDs listed below require an input voltage of 5V. Higher than 5.5V will cause damage to the PIC, LCD, and backlight (if attached). At 5V, the SerLCD uses 3mA with the backlight turned off and ~60mA with the backlight activated. The following LCDs do not have a SerLCD backpack.

The SerLCD and built-in serial LCDs comes equipped with a 10k potentiometer to control the contrast of the LCD. This is set during assembly and testing but may need correcting for your specific LCD module. Temperature and supply voltage can affect the contrast of the LCD. While powered, simply adjust the potentiometer with a screw driver.

The SerLCD v2.5 uses a general purpose, 1000mA NPN transistor to control the LCDs backlight. If you purchased the SerLCD module, you may use this pin as a general purpose, high power control pin. If you issue the backlight on/off command to the SerLCD or built-in serial LCD, the BL pin on the board can also be used to power / control other circuits with a maximum current of 1000 mA. This is usually the last pin on the top row of the LCD. Check your datasheet for proper pin outs.

In this tutorial, you will learn to interface anLCD with a pic microcontroller. It is very simple and easy to understand the project for beginners and is commonly used in several electronic products. LCD (Liquid Crystal Display)provides a user-friendly interface and can be very useful for debugging purposes. After completion of this tutorial, you will be able to display data on an LCD using MPLAB XC8 Compiler and Mikro C compiler. We will provide examples with two Compilers such as MPLAB XC8 Compiler and Mikro C for PIC.

The reason LCD is more popular than LED, Seven Segment displays. Because we can display characters, numbers and custom characters with ease ( Just by easily programming a module).

First of all, to interface LCD with a pic microcontroller, we used GPIO pins.  GPIO pins are general-purpose input-output pins. Because we send control and data signals to LCD through these I/O pins.  Therefore, you should know how to use digital input-output pins of the pic microcontroller. To know about GPIO pins programming, check these tutorials:

It can work in two modes, 4-bit and 8-bit. In this tutorial, we have used the 4-bit mode which uses only 4 data lines, thus saving pins of the microcontroller. So It is recommended to use LCD in four bits mode to save pins of the microcontroller for other applications.

As you can see in this diagram, if we use 8-bit mode interfacing, we will need to use 11 pins of pic microcontroller. On the other hand, if we use 4-bit mode, we need only 6 GPIO pins. Therefore, it is recommended to use 4-bit mode interfacing.  The only difference between  4-bit and 8-bit is that data transfer speed is faster for 8-bit mode. However, it doesn’t make any major difference.

A variable resistor is used to adjust the contrast of 5×8 dot pixels according to background light. Therefore, if you are not able to see anything on LCD after programming, the maximum changes are that you need to adjust contrast with the variable resistor. This contrast register makes adjust to the voltage applied on the VEE pin.

For MPLAB XC8 Compiler, we will use the PIC18F4550 microcontroller. For MikroC Pro for PIC, we will use the PIC16F877A microcontroller. In the case of MPLAB XC8, we will develop our own LCD library. Because the XC8 compiler does not provide built-in libraries. In the contrary, MikroC Pro provides libraries for all modules such as LCD, Keypad, ADC Module, UART module.

In this section, we will see how to write example code for 16×2 LCD interfacing with PIC18F4550 microcontroller. Although, you can use see code with other Pic microcontrollers also.

As we mentioned earlier, we can use the 8-bit mode and 4-bit mode interfacing. But due to the efficient use of MCU pins, we will be using 4-bit Mode. To interface LCD, we follow these steps:

In this circuit, we used the PORTB of PIC18F4550. But you can use any PORT. To do this, we need to change the pin assignment inside the code. I will show you how to assign pins for LCD in the next section.

These lines define which pins of the pic microcontroller should connect with LCD. For instance, in this example, we used the PORTD of PIC18F4550 microcontroller. Connect RD0-RD3 pins with D4-D7 pins of LCD respectively and other pins with RW, EN, RS and Power pins. But you can change PORT to other PORT of PIC microcontroller also by changing the PORT name with these commands.

LCDWriteNibble() function is used to write a nibble. Nibble is basically a half a byte. Because we are using LCD in four bits mode. Therefore, we need to send 8-bit commands/data in four bits chunks. This function writes the specified nibble to the LCD.

Because we will use 4-bit mode, data and commands transfer in 4-bits format. Even it requires at least 8-bit to display a character. To resolve this issue, we send data in a 4-bits format two times.

void LCDPutChar(char ch): Writes a character to LCD at current cursor position. This function displays the specified ASCII character at the current position on the LCD.

LCDGoto(char pos, char ln): This function positions the cursor at the specified line and column. Column and line at which the cursor should be positioned between 0-15 for pos (column) and 0-1 for ln(row).

In last section, we have seen how to display ASCII characters or string. But in almost all practical projects, we need to display, integer, float values. This code displays the counter value which increments from 0-9 after every one second. This is the main function of code only. Because the rest of the code is same as the previous program example.

In this section, we will see how to interface LCD with pic microcontroller and programming examples using MikroC for pic. MikroC pro has a built-in library.

We have used 16×2 LCD which means there are 2 rows and 16 characters in each row. So we can display a total of 32 characters at a time in two rows with 16 characters in each row.

This is the main command which prints our text on LCD. It also gives the privilege to specify the position of the text. In the horizontal direction, we count rows number and in a vertical direction, we count the column number. In above command,

However if your string is longer than the number of characters that could be displayed in a row from the starting position, the last characters will not be displayed. E.g. Lcd_Out (1, 6 “LCD Interface”);will display text in row 1 starting from column position 6 and will display only LCD Interfacethe rest of the characters will not be displayed as there is no room for them.

void Lcd_Out_Cp(char *text);will start printing the text from the current cursor position. For example after printing Lcd_Out (1, 1, “LCD”);if you write Lcd_Out_Cp(“Hello”);it will display “Hello”at a position from column position of 4 in row 1.

void Lcd_Chr(char row, char column, char out_char);allows only single characters to be displayed at specified positions. E.g. Lcd_Chr(2, 5, ‘A’); will print only A on column 5 row 2.

void Lcd_Chr_Cp(char out_char); allows to print only single character from current cursor position like after Lcd_Chr(2, 5, ‘A’);if your writeLcd_Chr_Cp(‘B’);it will be printed at row 2 column 6.

To interface LCD withPIC16F877A and display the text ‘LCD INTERFACE’ on it. LCDs come in different sizes and shapes. For this project, we have selected a 16×2 character, alphanumeric LCD. It contains 2 rows of 16 character.

When using PIC microcontroller, the mikroC compiler has a built-in LCD library that supports the commands to carry out LCD initialization. The library consists of a number of functions to control LCDs with 4-bit data interface.

The main program first clears the LCD screen and then displays “LCD INTERFACE” in the first row of LCD. The LCD pin directions are all set as outputs. The RS pin of LCD is set to 1, which indicates that the information received from DB4-DB7 is a valid text to be printed on LCD screen. The EN pin is also set to 1 which indicates that data is send to the LCD.

Programmed LCDs are vastly used for industrial as well as commercial applications. LCDs are used in UPSs or inverters, where voltage and current readings are displayed on the screen. Instructions to be followed are displayed on an LCD screen in airports, banks, hospitals, etc. If you still have any issue after reading this article, feel free to comment on this post with your issues.

This 8051 Microcontroller Programming Interfacing Board with ZIF Socket comes with 16x2 LCD Display and have on-board Atmel AT89S52 IC & RS232 IC. 8051 Microcontroller Interfacing Board has DIP 40 Pin Microcontroller ZIF (Zero Insertion Force) Socket. For Easy Insert and Remove of IC. ZIF Socket Protect Your Microcontroller From Damage. | ABOUT 8051 PROGRAMMER: For How To Program 8051 AVR Microcontroller |How to install driver | Circuit Diagram-Connection|Driver For All Windows OS 64|32-bit (All in 1 RAR file) Download= https://bit.ly/progallinfo | AVR 8051/8052 USB ISP Programmer For Atmel AVR & 8051 Microcontroller With Free USB Cable.Programmer Support many Digital Microcntrollers like (89S51, 89S52, AT89SXX, Classic AT90SXX, CAN Series) & (AVR, ATmega, ATtiny) ATmega 8/328, 16, 32 etc with the same Programmer.For Supported IC List: SEE Product Images.It is low cost USB based programmer.No need to take out Target Micro controller from the development Board.Programmer will work with variety of Atmel AVR & 8051 microcontroller.ItAllows You to Read/Write the Microcontroller Flash,EEPROM,Fuse Bit & Lock Bit.Support Windows OS(Xp to 10),Mac OS X & Linux. ATmega8 with USBasp Firmware Pre-loaded.SCK Option to Support Targets With Low Clock Speed(<1.5 MHz).5 KB/sec Maximum Write Speed. Programmer can Provide 5V supply for Target Microcontroller,so No Need of Any External Supply.Two Status LEDs|Green LED:Power Supply Indicator|RED LED :It is ON While Programmer is Busy.6 pin Polarized ISP Interface for Easy Connection.Supported Software: Progisp,AVRdude,Khazama AVR Programmer | ABOUT 8051 DEVELOPMENT BOARD: If You are Learning Microcontroller Programming & want to make Project based on 8051 microcontroller then This Board will help you.With this board you can Develop & Prototype with any of 8051(AT89S51, AT89S52, P89V51RD2, AT89Cxx etc) 40 pin microcontrollers. 1.5 Amp Bridge Rectifiers allow this board to be Powered with both AC & DC power supply adapters.It RS232 Serial port for flashing like P89V51RD2 (NXP) microcontrollers & also use for interfacing GSM module,GPS Module,RFID Module.There is 5V, 12V, GND Power bus which allow to Power external Peripherals module. FEATURES of 8051 Board:DIP 40 Pin Microcontroller ZIF (Zero Insertion Force) Socket. For Easy Insert and Remove of IC. ZIF Socket Protect Your Microcontroller From Damage.RS232 Interface Circuit for Easy Communication with PC & other Serial Devices(GPS modules, GSM Modems, etc).High quality FR-4(1.6 mm) PCB.On-Board bridge rectifier so that board can accept both AC and DC Input voltages Power supply .Recommended Input Voltage : 9-12V.Min-Max Input Voltage : 9-18V.On-Board 5 mm Power Plug-in DC Jack.On-Board 5V regulator (LM7805) circuit.On-Board Power ON - OFF switch.On-Board power indication RED LED.On-Board GREEN USER LED connected to P2.0 through jumper JP3.On-Board Input User Switch P3.3 through jumper JP2.On-Board Input External Interrupt Switch (INT1) at P3.3 through jumper JP2.On-board Quartz Crystal 11.05892 MHz.Port Extensions for all PORT with Detailed Pin Labeling for Easy Identification of Pin.External Pull-Up resistors for Port 0.On-board ISP connector for loading HEX file into Microcontroller like AT89S51/52 etc.Vcc bus (5V and 12V) & GND bus provided to Give POWER Supply to the External Peripheral.Four 3mm mounting hole for easy mounting.On-board Reset button.Dimensions: 12cm x 6.4cm. | ABOUT 16x2 LCD DISPLAY: This is 16 x 2 LCD Display with Yellow/Green Backlight ASCII Alphanumeric Character.16×2 LCD Display Support mostly All Digital Microcontroller such as Arduino, 8051, PIC, AVR, ARM, MSP, COP8, STM, Raspberry Pi etc. About 16×2 LCD Display: 16×2 LCD is a basic 16 character by 2 line display Yellow/Green Back light. Utilizes the extremely most common HD44780 parallel interface chipset (datasheet). Even more it has JHD162A Compatible Pinout Diagram and Command Interface code is freely available. Finally You will need 7 general I/O pins (If use in 4-bit Mode) to interface to this LCD screen.It also Includes LED back-light.Features of 16×2 Display LCD: Commonly Used in: Student Project, Collage, copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices.| LCD display module with Green/Yellow Backlight.| SIZE: 16×2 (2 Rows and 16 Characters per Row) | Can display 2-lines X 16-characters | Operate with 5V DC | Wide viewing angle and high contrast | Built-in industry standard HD44780 equivalent LCD controller | LCM type: Characters. | NOTE: POWER SUPPLY Adapter IS NOT Included WITH THIS ITEM. For Example Code of 8051 Microcontroller & Have any Queries; Please Contact Us mytechnocare.info@gmail.com or Visit Mytechnocare Website.| DOWNLOAD: For How to install driver |Circuit Diagram|Connection|Program 8051 AVR Microcontroller|Driver For All Windows OS 64-bit & 32-bit = https://bit.ly/progallinfo | Note:Design,color or Parts of the Product may vary as per the Availability.