Physical Form MCS51 40 Pin Microcontroller Family

Physical Form MCS51 40 Pin Microcontroller Family

 MCS51 microcontroller hardware architecture has a 40 foot, 32 foot used for the 4 port parallel. 1 port consists of 8 feet can be parallel connected for interfacing to devices, such as ADC, sensors and so on, or can also be used on its own every single bit, bit for interfacing such as switches, LEDs, etc.. Other characteristics of the microcontroller MCS51 as follows:
1. Low-power 32 line inputs / outputs that can be programmed * 
2. Two 16-bit timer counter 
3. 128 bytes of RAM 
4. Five interrupt
       Unlike computer systems, which are capable of handling a wide range of application programs (such as word processing, processing, etc.), the microcontroller can only be used for a particular application (only one program that can be stored). Another difference lies in the comparison of RAM and ROM. In comparison computer system RAM and ROM is large, meaning that the user programs are stored in RAM space is relatively large, whereas routines interface hardware is stored in a small ROM. While on Microcontroller, ROM and RAM comparison of his large, meaning that the control program stored in ROM (could Masked ROM or Flash PEROM) are relatively larger in size, while the RAM is used as a temporary storage place, including the registers used in microcontroller concerned. 
Excess System With Microcontroller 
1. Fueling the microkontroller use assembly programming language based on the rules of the digital base so    that the operation of the system to be very easy to work according to the logic of the system (assembly language is easy to understand because it uses assembly language applications where input and output parameters can be accessed directly without using a lot of commands). Design an assembly language does not use so many terms of writing a programming language such as uppercase and lowercase letters for permanent assembly language allowed
2. Arranged in a single chip microcontroller where the processor, memory, and I / O is integrated into a single unit control system so that the microcontroller can be regarded as a mini computer that can work innovatively in accordance with the needs of the system. 
3. The system is running stand alone without depending on the parameters of the computer while the computer is only used for the download command or program instructions. Steps to download a computer with a microcontroller is very easy to use because it does not use a lot of command.
 4. In microcontrollers available facilities for the development of memory and I / O that are tailored to the needs of the system. 
5. Price to acquire these tools are cheaper and easier to obtain.