The 8051 has been in use in a wide number of devices, mainly because it is easy to integrate into a project or build a device around. The following are the main areas of focus:
i. Energy Management:Efficient metering systems help in controlling energy usage in homes and industrial applications. These metering systems are made capable by incorporating microcontrollers.
ii. Touch screens:A high number of microcontroller providers incorporate touch-sensing capabilities in their designs. Portable electronics such as cell phones, media players and gaming devices are examples of microcontroller-based touch screens.
iii. Automobiles: The 8051 finds wide acceptance in providing automobile solutions. They are widely used in hybrid vehicles to manage engine variants. Additionally, functions such as cruise control and anti-brake system have been made more efficient with the use of microcontrollers.
iv. Medical Devices:Portable medical devices such as blood pressure and glucose monitors use microcontrollers will to display data, thus providing higher reliability in providing medical results.
Programming environment and programmer
Formerly, programmers used machine language for coding. A machine language is a program that consists of 0s and 1s which was very dreary for the humans to program any computer. In due course of time, assembly language was developed in order to speed up the programming and make it error-free. Assembly language is a low level language which uses an assembler to translate the program into machine code. The high level programming languages such as BASIC, Pascal, Forth, C, C++, and Java are available to code the program for 8051. These high level languages make use of a Compiler to translate into machine code. For example, when a program is written in C, the program needs to be translated into machine language using C compiler. Usually, Assembly and C language is widely used for 8051 programs as compared to the other high level languages.
The 8051 provides a total of four ports for I/O operations. 8051 has 40 pins, of which 32 pins are set aside for the four ports. PO, P1, P2, and P3 each have 8 pins and can be used for either input or output. The remaining pins are designated as Vrt, GND, XTAL1, XTAL2, RST, EA, ALE/PROG and PSEN.
8051 allows you to manipulate one or all of the bits of a port, thus providing programmers with a unique and powerful feature. 8051 provides the programmer with the ability to read, write and modify each port to customize applications as much as possible.