AT89C51 Animated BMP Graphic LCD Display

AT89C51 microcontroller controlled Animated BMP project usnig Graphic LCD Display 128×64 project keil source code and proteus isis simulation schematic files

Graphic LCD Animated BMP Schematic

The CPU performs the data flow and data processing tasks between the different units of the computer. Most of the data processing is done in the arithmetic logic unit inside the CPU. The CPU manages the operation of the computer system by executing various commands.

The commands stored in the computer memory create the program that the computer will execute. The control subunit in a CPU manages the data flow in the system, decodes the instruction read from memory and performs the action determined by the instruction. Transactions are data transfer or operations in the ALU. ALU performs basic arithmetic operations such as addition, subtraction, multiplication, division, and logic operations. Logic operations are operations such as AND, OR, and EX-OR.

It is a subunit input device that transfers data from the outside world to the CPU. Input data can come from many different sources, such as a human, another computer, or another electronic system. The data processed by the CPU can be output immediately or stored in memory for later processing. It is a subunit output device that transfers data from the CPU to the outside world.

With this unit, displays, printers, devices that transfer data to other computers or electronic systems are indicated. In 1971, the era of microprocessors began with the ALU and control units of a computer placed on a silicon IC by the INTEL company. In a simple technical definition, a microprocessor is a CPU placed on a single semiconductor IC. Microprocessors are general purpose devices and are suitable for many applications.

A microcontroller is a computer built on an integrated circuit. The memory and input/output subsystems in a microcontroller integrated circuit enable these processors to be used for control purposes in many applications, directly and alone, with much simpler and cheaper interface techniques than microprocessors. Today, microprocessors and microcontrollers are indispensable units of technology and are used in numerous fields. Today, there are many companies producing microprocessors and microcontrollers. The most important of these are INTEL and MOTOROLA companies.

In summary, a microcontroller is responsible for monitoring many features of the system in which it is used at the same time, real-time response when needed, and controlling the system.

What is Bitmap?

Bitmap is the general name given to the picture formats in which all the color information required to display a picture on the computer screen (display space) is given for the hex pixel (the smallest addressable picture piece within the screen resolution -pixel-) that makes up the screen. GIF, JPEG, BMP, PCX are example Bitmap formats.

Bitmap formats create the picture with a fixed definition depending on the resolution of the picture (Raster technique). As such, if we scale (reduce/enlarge) the image, we may lose a lot of detail. In vector-based graphic formats, loss of scaling is avoided as the definitions are relative (such as CAD formats, Post Script (PS, EPS) formats).

BMP

The most basic image format is BMP (bitmap). In fact, there are several different types of BMP. There are differences especially for an X-Windows user and an MS-Windows or OS/2 user. The BMP format on X-Windows only supports 2 colors. The X-Windows equivalent of the BMP format on MS-Windows or OS/2 is XPM (pixmap).

BMP on MS-Windows is a very fast format that you can save 16 or more colors without any compression. In this format, the size of the picture is important, not the number of colors in the picture. A BMP file with 16 colors, 800×600 resolution will occupy 800x600x1/2=240000 bytes. (4 bits required for 16 colors =1/2byte) It doesn’t matter if there are 1, 2 or 12 colors in the picture. If it is a file saved as 256 colors, it will take up 800x600x1=480000 bytes (8 bit=1 byte required for 256 (2^8=256).